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251.

date:page22 112-1

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252.

Write two differences between ZIFT and GIFT

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Ans :- GIFT (gameteintrafallopian transfer) and ZIFT (zygoteintrafallopian transfer) are modified versions of in vitro fertilization (IVF).

ZIFT transfers a fertilized egg directly into the fallopian tubes whileGIFTutilizes a mixture of sperm and eggs.

In GIFT, the sperm and eggs are mixed together and immediately inserted.On the other hand, with ZIFT, the fertilized eggs --”zygotes”-- are inserted within 24 hours of the mixing.

253.

4. Write any two differences between food chain and food web.

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254.

(4) Whal is(5) Write any two differences between dysentry and diarhoea

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255.

Answer the following40. i) Why is th3xe use of lodine salt advisable ?o differences betwen Central Nervous system and) Write any twPeripheral Nervous systemOR

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Iodine is needed by the thyroid gland for the production thyroxin hormone. This hormone regulates fat, protein and carbohydrate metabolism in our body. If this is in deficient quantity then the neck will swell up due to the enlargement of thyroid gland.

Central nervous system- central nervous system consists of the brains and spinal cord. brain is the main controlling part of nervous system and it is safely located in the cranial cavity. In the space between the delicate central nervous system and its bony covering are the protective layers called the meninges.cavities present in various parts of the brain are called as ventricles. the long tubular cavity of spinal cord is called as central canal. spinal cord is held within vertebral column. it is slightly thick but gradually tapers towards the end. there is thread like fibrous structure at its end called as filum terminal.

peripheral nervous system- the peripheral nervous system consists of the nerves originating from the central nervous system. these nerves connect the central nervous system with all parts of the body. they are of two types-A) cranial nervesnerves originating from the brain are called cranial nerves.bthey are associated with various parts in the head , thorax and abdomen. these are 12 pairs of cranial nerves.B) spinal nervesnerves originating from the spinal cord are called spinal nerves. these are associated with the arms, legs, stomach, etc . it is not under the control of our will.

256.

.Writethe constituents of central nervous system and peripheral nervous system. State in brief thefunction of central nervous system

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The central nervous system includes the brain andspinal cord, while the peripheral nervous system includes all of the nerves that branch out from the brain andspinal cordand extend to other parts of thebodyincluding muscles and organs.

The central nervous system (CNS) controls most functions of thebodyand mind. It consists of two parts: the brain and the spinal cord. The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control overbody movement.

257.

b) Diabetes mellitusPolyphagia is a condition seen ina) Obesityc) Diabetes insipidus d) AIDS10. Where does alcohol effect immediatdrinking?a) Eyesc) Liverimmediately afterb) Auditory regiond) Central nervous system

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central nervous system.......

central nervous system

eyes are the right answer...

liver is the correct answer

Central nervous system

Central nervous system

central nervous system

option c liver is the correct answer

d-central nervous system

options D is correct answer

option c liver is correct answer

option c is a correct answer

alcohol effect immediately after drinking is liver

central nervous system is the correct answer....

option c is a correct answer

Liver is immediately effected

Liver is affected by alcohol while drinking

central nervous system

central nervous system

Alcohol affects liver when we drink it in excessive quantity

Option (D) is the correct answer

central nervous system

c and D ok ok ok ok o ko

option D is correct answer

alcohol affects directly human central nervous system after drinking

this answers is option d

immediately after drinking central nerve system will be effected

option( D) i.e central nervous system

All types of drugs immediate effect our Central Nerve System.so alcohol demage our CNS,liver as well as kidney

liver is correct answer

d _Central nervous system

option c) liver is correct answer because alcohol effect immediately after drinking

aap sensor liver is the right answer because alcohol effect immediately after drinking we can say that all drugs are effect on liver

(d) central nervous system

due to alcohol cirrhosis liver

alcohol effect first LIVER so option C is correct

option c liver is tha correct answer

liver is correct ans

liver is correct answer😏😏

(c) Liver is right answer this question

c alchol hi hoga aur koi questions

10 . liver dose alcohol effect immediately after drinking

the alcohol immediately effect on central nervous system

(d) Central nervous system

The right answer is eyes

central nervous system par

alcohol effect liver immediately after drinking.

option d is correct answer

option d. is correct answer

option c-Liver is tha right answer

the correct answer is (C)

liver effect immediately after drinking

option (C) liver effect after drinking

after drinking alcohol the most effected part of the Human body is the CNS or Central Nervous System

Alcohol effect immediately on liver after drinking.

Afteradrinkis swallowed, thealcoholis rapidly absorbed into the blood (20% through the stomach and 80% through the small intestine), with effects felt within 5 to 10 minutesafter drinking. It usually peaks in the bloodafter30-90 minutes and is carried through all the organs of the body.

when any person drink alcohol .it effect immediately our ( CENTRAL NERVOUS SYSTEM) after drinking

alcohol effect liver.alcohol is effect after drinking liver.option is c

first it effects on nervous system

alcohol effect immediately after drinking on central nervous system

d is the correct answer;

central nervous system is correct

liver is affected first the it affects the CNS

alcohol pine se liver me kami aa jati h

central nerous system

alcohol effect in liver

after drinking its effect liver

258.

i) Adrenaline is an emergency hormone. Why ?i) Write any two differences between endocrine and Nervous system.

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Adrenalineis ahormonesecreted by adrenal medulla during stress.

This is called asemergency hormonebecause it initiates quick reation which makes the individual to think and respond quickly to the stress.

The hormoneincreases metabolic rate. there occurs dialation of blood vessels going to heart and the brain.

Thebiggestdifference between the twoisthat the nervous systemuses electrical impulses to send signals through neurones, whereasthe hormonal systemuses chemical messengers transported into blood plasma to target cells. This means thatcommunication is faster when usingthe nervous system

259.

IL. Functions of certain structres of Nervous system in animals are qiven incolumn'A and the names ofthese structres are given in column 'B.Match them.11 Column 'A1) carries involuntary quick respones2) controls voluntary and conscious thinking b) Medulla3) Maintains precision in voluntary actionsColumn 'Ba) Peripheral nervous systemand balance of the bodyc) Reflex arc4) Facilitates the communication between d) Dendritecentral nervous system & other body partse) Axonf) cerebellumg) forebrain

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260.

4. List two biotic components of a biosphere. → Pa

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biotic componentsmeans all the living organisms living on earthtwoexamples forbiotic componentsare: human , animals.. they are also sorted in groups like autotrophs or producers , heterotrophs, consumer's and decomposers.2 biotic components of biosphereare humans and plants.

261.

Ans. True(v) World nature day is celebrated on

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World Nature Day is celebrated on 28 July every year.

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262.

6) Write any four uses of leaves.

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wow jdbsjhdvdjdvdhd come on brainly fast??!!!

We can eat leaves we can drink leaveswe can dance leave we can toilet leaves

we can eat leaves.we can dress up with leaves.we can use them for our art purposes leaves are useful for plants as the kitchen

leaves is use for : Medicine,Fistival,

263.

(1)Complete the following tableLocal name of plant Name of activeUsesingredientVasicine present inthe leaves

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Local name of the plant is Malabar nut.

Uses:-

Vasica shows anantispasmodicandexpectoranteffect, and has been used for centuries with much success to treat asthma, chronic bronchitis, and other respiratory conditions. The powdered of herb, boiled with sesame oil, is used to heal ear infections and arrest bleeding.

264.

List four merits of water.

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it is use ful for drinkingit is use ful for farmingit is use ful for making foodit is use ful for bathing

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265.

1. Listany three reasons why youwould think that you are sick andought to see a doctor If of these symptoms twere present,would you still go to the doctoraWhy or why not?ntyou think the long-term effectsyour health are likely to beunpleasant?which of the followtng case doonmostif you get jaundice. if you get lice,or if you get acne.Why?

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1)

2)

266.

List any three reasons why youwould think that you are sick andought to see a doctor. only oneof these symptoms were presenwould you still go to the doctor?Whyy or why not?

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267.

List any three reasons why you would think that you are sick and ought to see a doctor. If only one o these symptoms were present, would you still go to the doctor? Why or why not?

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268.

1. List any three reasons why youwould think that you are sick andought to see a doctor: If only oneof these symptoms were present,would you still go to the doctor?Why or why not?

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269.

1. List any three reasons why youwould think that you are sick andought to see a doctor. If only oneof these symptoms were present,would you still go to the doctor?Why or why rnot?

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270.

3, Whul İs meuril by specific heatcapacity? How will you proveexperimentally that differentsub、IUI1Ces h(JV (' different 、pecificheat capacities?

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Specific Heat : The amount of heat needed to raise the temperature of 1 kg substance by 1° C.

Basics of Experiment;

Understanding:1) When hot and cold substances are mixed in a insulated container such as a calirimeter , heat will flow from hot substance to cold substance .2) Assuming heat absorbed by the container and heat lost to the environment are both negligible .Then, we will use Heat lost by the hot substance = Heat gained by the cold substance.

In this experiment, we will find that temperature change will be different for different substances. Hence, different substances has different specific heat capacities.

271.

What is the largest phylum of kingdomfundamental characteristics of it.S.

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Arthropod, any member of the phylum Arthropoda, the largest phylum in the animal kingdom, which includes such familiar forms aslobsters, crabs, spiders, mites, insects,centipedes, andmillipedes.

Characteristic features of Phylum Arthropoda

Thebodystructure shows bilateral symmetry.

They are triploblastic.

They can be found in all types of habitats – land,waterand soil.

They have jointed limbs.

Thebodyis segmented into three regions – Head, Thorax and Abdomen.

Characteristic features of Phylum Arthropoda

Thebodystructure shows bilateral symmetry.

They are triploblastic.

They can be found in all types of habitats – land,waterand soil.

They have jointed limbs.

Thebodyis segmented into three regions – Head, Thorax and Abdomen.

272.

what do you mean by protochordata?write there characteristics feature as well as examples

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Protochordates arean informal category of animals ), named mainly for convenience to describe invertebrate animals thatareclosely related to vertebrates. This group is composed of the Phylum Hemichordata and the Subphyla Urochordata and Cephalochordata.

273.

name the largest Phylum of the animal kingdom and write down their feature of that phylem

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274.

धर ० ५7. Bemul how oy W},wm/ »न g

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The following are the four ways in which individuals with a particular trait may increase in population-1) Natural Selection- of variations brought through the course of time.

2)Mutation- Slight changes in the genetic information of the offspring during fertilization.

3)Geographic Isolation- where a population of species gets separated by their respective group due to physical/natural barriers.

4)Genetic Drift and Isolation- An accident in small population of a species may also result in survival of species having a particular trait.

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275.

65, A man arranges to pay off a debt of3600 by 40 annual instalments which form anarithmetic series. When 30 of the instalments are paid, he dies leaving one-third of thedebt unpaid, find the value of the first instalment.

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276.

Mention any two reasons for failure to sustain underground water

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Ans :- The major reasons for the failure of restoring groundwater level are not able to stop deforestation and curb rapid urbanization.

The loss of vegetation increased pollution and global warming.

Another major reason is the misuse of groundwater and lifting it with the help of deep tube wells.

This made the groundwater to fall and sustain the level.

Restoring the level of groundwater is one of the major concerns of the environmentalist and geologists as they are causing major earthquakes due to the movement of the tectonic plates underground.

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277.

. Label the parts indicated by guidelines and answer thequestions given below:(a) Is the given diagram that of a plant cell or an animalcell?Give three reasons that are visible in the diagram tosupport the answer given in (a),(c) Mention any two function of the part labelled (4),

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A) the given diagram is plant cellsb) The structure unique to plant cells is Cell wall, plastids and large vacuolesc)This organelle has two major functions. It stores the cell's hereditary material, or DNA, and it coordinates the cell's activities, whichincludeintermediary metabolism, growth,protein synthesis, and reproduction (cell division). Only the cells of advanced organisms, known as eukaryotes, have a nucleus.

1) cell wall2) cell membran3) Ribosome4) luclear membrane5)Vacuole

278.

water droplets are observed near the tip of grass blades in the morning what is such loss of water in liquid phase called why does this phenomena occur

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The appearance of water droplets at the tips and edges of the leaves of a plant is caused by a secretory process calledguttation. It often occurs under conditions of moist soil, high humidity, and relatively cool air and it usually occurs in the early morning.Please let me know if the answer you were expecting is different.

279.

out using trigonometric tables, evaluate:220 + Ccos270°sin2 64° + cos 64 sin 26 CBSE 2001ccossin220 sin 270sin 15° cos 75° cos 15 sin 75cos θ sin (90°-θ) + sin θ cos(90°-9)(ii) sec210°-cot 80%

Answer»

(i)

(ii)

280.

lipase.1 What is the reason behind tooth decay?

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Causes of Cavities and Tooth Decay:

Poor Oral Hygiene: Not brushing your teeth regularly allows plaque to build up and attack the tooth enamel.

Food and bacteria can cause tooth decay

It’s not just sugar alone that causes cavities, it’s the lack of nutrients that strengthen teeth.

281.

(b)3何衷マ阿11. Draw a neat diagram of a Nerve cell and label the following partsCell - body; Axon; Node of Ranvier

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282.

16. Draw a neat diagram of LS of a flower and label the following parts:Carpel, Stamen, Thalamus

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283.

6. List 10 modern-day animals and using the internet resources link it toa corresponding ancient fossil. Name both.

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284.

at is primary productivity?Why does it vary in different ecosystems ?State the relationship between gross and primary product

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Primary productivity : Production of biomass/produced energy per unit area in a certain time period by plants duringphotosynthesis. it depends upon - plant species inhabitating a particular area, environmental factors availability of nutients, photosynthetic capacity of plant.

GPP - R = NPPwhere,NPP = Net Primary ProductivityGPP = Gross Primary ProductivityR = Respiration Losses

285.

(C) downwards,MA shell is fired from a canon with a veloaty V at an angle θ with the horizontal direction. At the hipoint in its path, it explodes into two pieces of equal masses. One of the pieces come to restspeed of the other piece immediately after the explosion isC-6. The32(A) 3V cose(C) V cose

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286.

6. Name any two types o1 steni moummc7.Name the two parts of a stamen. State the functions of each of these two parts.

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Stamen. The malepartsof a flower consist of one or morestamens.Each stamenis made up of pairedanthers(sacs containingpollen) on afilamentor stalk

right answer

287.

When you untie the neck of youbull at the time of plouging, imoves towards plough without anyinstructions. In the same way, itmoves towards tub at the time offeeding. How does the bull responddifferently?Birds collect material which is sof

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There is this art of bull training. No bull by birth will be tuned to do that. They train it in such a way that the grip or pull off the rope means different in different situations.

288.

8. Write the chemical formulaBleaching powder, common saltbaking soda, washing soda

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bleaching powder

common salt

baking soda

washing soda

289.

Complete the chdPclassroomAbiotic componentsPhysical factorAir, water, vapourminerals, soil,sunlightInorganic substancesHydrogen, Oxygen,Nitrogen,Calcium, Iron,Sodium, PotassiumProteinsCarbohydratesfats

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290.

what is the meaning of search

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search means to find anything

okk

I got it

291.

6. Where do the lipids and proteins constituting the cellmembrane get synthesised?Ancha mhtain its food?

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correct answer is fuck off

Lipidsand proteinsconstituting thecell membranearesynthesizedin the endoplasmic reticulum. SER (Smooth endoplasmic reticulum) helps in the manufacturing oflipids. RER (Rough endoplasmic reticulum) has particles attached to its surface, called ribosomes. These ribosomes are the site forprotein synthesis

hai sir please find the best answer

they are synthesised in SER (smooth endoplasmic reticulum)

Generally lipids and proteins are synthesised in Endoplasmic Reticulum i.e. ER * lipids are synthesised by SER (Smooth Endoplasmic Reticulum)and,* proteins are synthesised by RER (Rough Endoplasmic Reticulum).

292.

B. Cell Membrane is composed ofa. Proteins and celluloseb. Proteins and PhospholipidJ. Proteins and carbohydratesd. Proteins, Phospholipid and somecarbohydrates

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C, option is correct answer

c is the right answer

c option is the right answer

option b is correct answer

answer is (d)

293.

io8toc2. The bacteria nostoc are used as food because they have abundent amount ofC.d. none of theseda. proteins and vitamin Cc. water and vitamin Db. carbohydrates and lipidsd. carbohydrates and proteins

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a. Proteins and vitamin CTHE BACTERIA NOSTOC ARE USED AS FOOD BECAUSE THEY HAVE ABUNDANT AMOUNT OF PROTEIN AND VITAMIN C.

294.

Q. 3 Glucose is stored in the form of glycogen inb) Intestinea) Stomachc) Liverd) Pancreas

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option c). liver

hit like if you find it useful

d) pancreas is the correct answer.....damn sure..

295.

3) Angina results from the weakening of the(a) heart(C) stomach(b) liver(d) lungs

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Angina Pectoris is related to heart

296.

the peristaltic movement is absent ina) stomachb)small intestinec)caecumd)rectum

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option A when stomach is filled, peristaltic movement is diminished.

297.

Q. 5. How is small intestine designed to absorb digested food ?ns. Small intestine is a long tubular structure. The inner wall of small intestineGnger like nrocesses called

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The inner lining of thesmall intestinehas numerous villi which increase the surface area for absorption. The villi are richly supplied with blood vessels which take theabsorbed foodto each and every cell of the body.

298.

s)How is the small intestine designed to absorb digested food?

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299.

Q.5.How is the small intestine designed to absorb digestedfood?[SAI- 2013]

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300.

ahd glycerol.How is the small intestine designed to absorb digestedfood ?ISAI- 2013]The inner lining of the small intestine hasnumerous finger-like projections called villiwhich increase the surface area for absorptionThe villi are richly supplied with blood vesselwhich take the absorbed food from each anevery cell of the body

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The small intestine has millions of tiny finger-like projections called villi. These villi increase the surface area for more efficient food absorption. Within these villi, many blood vessels are present that absorb the digested food and carry it to the blood stream. From the blood stream, the absorbed food is delivered to each and every cell of the body.