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10801.

Question : Oxygen carried in inhalation ultimately reaches

Answer»

Bronchioles
Bronchus
Trachea
Alveoli

Answer :D
10802.

Question : Oxygen binding to haemoglobin in blood is

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directly PROPORTIONAL to the concentration of `CO_2` in the MEDIUM
inversely proportional to the concentration of `CO_2` in the medium
directly proportional to the concentration of CO in the medium
INDEPENDENT of the concentration of CO in the medium

Answer :B
10803.

Question : Oxygen carried by blood is liberated in:

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Arteries
Capillaries of body
Capillaries of lungs
Heart

Answer :B
10804.

Question : Oxidative phosphorylation refers to:

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ANAEROBIC production of ATP
The citric acid CYCLE production of ATP
Production of ATP by CHEMIOSMOSIS
ALCOHOLIC fermentation

Answer :C
10805.

Question : Oxidative phosphorylation occurs in

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ANSWER :INNER MEMBRANE of MITOCHONDRIA
10806.

Question : Oxidative phosphorylation occurs during electron transfer in

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CHLOROPLASTS
MITOCHONDRIA
Ribosomes
Glyoxisomes

ANSWER :B
10807.

Question : Oxidative phosphorylation is done by

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Mitochondria
Chloroplast
Plastids
Ribosomes

Answer :A
10808.

Question : Oxidative phosphorylation and Photosphorylation.

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SOLUTION :
10809.

Question : Oxidation of FADH_2results in formation of:

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3 ATP
2 ATP
1 ATP
No ATP

Answer :B
10810.

Question : Ovules with two integuments are called_____.

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ANSWER :bitegmic
10811.

Question : Ovules occer along the ventral suture over aridge in two rows in placentation

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MARGINAL
Parietal
Axile
FREE central.

Answer :A
10812.

Question : Ovules are borne in tworows on the ridge of ventral suture in condition

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Marginal
Perietal
AXILE
Basal

Answer :A
10813.

Question : Ovule is comparable to(A) megasporangium(B) microsporangium(C) microsporophyll(D) megasporophyll

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megasporangium
microsporangium
microsporophyll
megasporophyll

Answer :D
10814.

Question : Ovule integument gets transformed into :

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SEED
FRUIT wall
Seed coat
Cotyledons

Answer :C
10815.

Question : Ovule is attached to placenta of ovary wall by :

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PEDICEL
Petiole
Placenta
Funicle

Answer :D
10816.

Question : 'Ovule''

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INTEGUMENT ENCLOSES ovule completely.
The body is MADE up of nucellus.
Tenuinucellate ovules has very large nucellus.
Mature ovule consists of stalk.

Answer :C
10817.

Question : ovulation takes place on the day .......... of menstrual cycle.

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`7th`
`10th`
`14th`
`17TH`

ANSWER :C
10818.

Question : Ovulation takes place in _____.

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ANSWER :OVARY
10819.

Question : Ovulation takes place on the 14th day of menstrual cycle. Why ?

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Solution :On 14th DAY of menstrual cycle, the level of FSH drops and LH HARMONE SECRETION increases, which makes Graffean follicle to RELEASE ovum called ovulation.
10820.

Question : Ovulation takes place on the 14th day of menstrual cycle. Why?

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Solution :LH surge/maximum LEVEL of LH/LH and FSH attain peak level on `14^(th)` day.
Detailed ANSWER:
Rapid SECRETION of LH [luteinising Hormone) called LH surge induces RUPTURE of graafian FOLLICLE and releases the ovum - ovulation takes place.
10821.

Question : Ovulation occurs under the influence ofa)LHb)FSHc)Estrogend)Progestrone

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LH
FSH
Wstrogen
Progestrone

Answer :A
10822.

Question : Ovulation occurs in……………days during human ovarian cycle.

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7
21
14
28

Answer :D
10823.

Question : Ovulation in the human female normally takes place during the menstrual cycle

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at the MID SECRETORY phase
just before the END of the secretory phase
at the BEGINNING of the PROLIFERATIVE phase
at the end of the proliferative phase

Answer :D
10824.

Question : Ovulation in human female normally takes place during the menstruation cycle :

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At the mid-SECRETORY PHASE
At the END of proliferative phase
Just before the end of the secretory phase
At the begining of proliferative phase

Answer :B
10825.

Question : In human female, ovulation occurs during menstrual cycle:

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At the beginning of the PROLIFERATIVE phase
At the END of proliferative phase
At the MID of SECRETORY phase
Just before the end of secretory phase

Answer :B
10826.

Question : Ovulation in mammals is caused by:

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FSH and TSH
FSH and LH
FSH and LTH
LTH and LH

Answer :B
10827.

Question : Explain oviparous and viviparous.

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SOLUTION :
10828.

Question : overset(C)overset(|)Aunderset(D)underset(|)BtoA=B+C-D In this reaction which of the following enzyme class should be involved ?

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Isomerases
Hydrolases
Lyases
Oxidoreductase

Answer :C
10829.

Question : Overproduction is the principle of ………. .

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Lamarkism
THEORY of ORGANIC evolution
Panspermia theory
Modern theory of evolution

Answer :B
10830.

Question : Overlapping zone between two biomes is :

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Ecosphere
Ecotype
Ecotone
Ecosystem

Answer :B
10831.

Question : Over-reaction to a stressful event, panic and school phobia are

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Obsessive-compulsive disorders
Attention-deficit disorders
Anxiety disorders
Mood disorders

Answer :C
10832.

Question : Ovary - Ovarian follicle

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SOLUTION :Ovary : In females it is LOCATED on both sides of uterus. It is responsible for producing ovum and FEMALE sex hormones.
Ovarian follicle : They are different stages of development of TISSUES surrounding EGG cell and ovum.
10833.

Question : Ovary wall: Pericarp Integuments: _____

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SOLUTION :SEED COATS
10834.

Question : Ovaryismadeup of______.

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SOLUTION : CARPELS
10835.

Question : Ovary

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Solution :Location : It is LOCATED in ABDOMINAL CAVITY in FEMALE.
Function : PRODUCES ovum and female sex hormone.
10836.

Question : What do the followings parts of a flower develop into after fertillsation ? (a) Ovary (b) Ovules.

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SOLUTION :Location: The BASAL swollen part of pistil
Function: Ovules are DEVELOPED from ovary
10837.

Question : Ova from the wife/donor (female) and sperms from the husband/donor (male) are collected and are induced to form zygote under simulated conditions in the laboratory. Which techniques are used after this?

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Solution :zygote INTRA fallopian transfer, intra uterine transfer . In ZIFT zygote or EARLY embryos (with up to 8 BLASTOMERES) transferred into the fallopian tube. In IUT- embryos with more than 8 blastomeres transferred into the UTERUS
10838.

Question : Ovarian duct - Infundibulum

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Solution :Ovarian duct : Ovarian duct transport ovum from ovary to UTERUS.
INFUNDIBULUM : It SENDS ovum arranged betweeen folds of ovarian to ovarian duct from ovary.
10839.

Question : Outline the salients features of carbon cycling in an ecosystem .

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Solution :All living organisms require nutrient ELEMENTS in relatively large amounts . They get the nutrients from the biosphere components . The nutrients elements derived from the earth by the living organisms for use in their growth and metabolism are called boigeochemicals or biogenetic nutrients . The movement of nutrient elements through the living and the nonliving components of the biosxphere is called biogeochemical CYCLE .
In the gaseous CYCLES the reservoir for nutrient elements is in the atmosphere . The four most abundant elements in the living systems H, C,O, N - have predominantly gaseous cycles . The carbon cycle is quick and relatively perfect system in that the elements remain in circulation . Carbon is generally considered as the basis of life . Carbon atom is acting as a back bone for complex organic molecules like carbohydrates , lipids , proteins and nucleic acids .
The main sources of carbon are air , water , fossil fuel and rocks .
Carbon DIOXIDE is obtained from the biosphere by
i. green plants for photosynthesis
ii. corals for making calcareous skeletons .
Carbon is added to the biosphere by
i . respiration in organisms .
ii. decay of organic wastes and dead organisms .
iii. burning of fuel .
iv. weathering of rocks
v. volcanic activity .
10840.

Question : Outline the classification of recurrent apomixis.

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SOLUTION :
10841.

Question : Outermost layer of the pollen is formed from endothecium and is made up of(A) pectocellulose(B) lignocellulose(C) sporopollenin(D) pollen kit

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pectocellulose
lignocellulose
sporopollenin
pollen kit

Answer :C
10842.

Question : Outermost covering of brain is_____.

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Choroid
Arachnoid
Duramater
All of these

ANSWER :C
10843.

Question : Outer envelope of HIV consists of

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RNA coat
Phospholipid bilayer STUDDED with GLYCOPROTEINS CCR5 and CXCR4
Phospholipid bilayer studded with glycoproteins GP120 and GP41
`P_24` protein coat

Answer :C
10844.

Question : Outer covering of epiphytic root is :

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Cortex
Endodermis
Velamen
Exodermis

Answer :C
10845.

Question : Outer border of tergum bonds downwards in cockroach and attaches with :

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Muscles
STERNUM
Pleura
Fat BODY CELLS

ANSWER :C
10846.

Question : Outer and inner layer of seed coat are _______ and________ respectively.

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TEGMEN and testa
Hilum and tegmen
Testa and tegmen
Testa and hilum

Answer :A
10847.

Question : Outbreeding is the breeding of unrelated animals usually done by outcrossing, cross breeding and interspecific hybridisation a. Differentiate these three methods with brief descriptions. b. Give examples for the last two methods.

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Solution :a. Out crossing: Mating of animals within the same breed, but having no common ancestors on either side of their PEDIGREE upto 4-6 generation.
Crose breeding: Mating of superior males of one breed with superior females of another breed.
Interapecific hybridisation: Mating MALE and female animals of two different related species.
b. Cross breeding: Hisardale SHEEP developed by crossing Bikaneri ewes and Marino rams. ,br> Interspecific hybridisation: Mule by crossing horse and donkey.
10848.

Question : Outbreeding is an important strategy of animal husbandry because it

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help in accumulation of superior GENES
is useful in producing purelines of ANIMALS
is useful in overcoming INBREEDING DEPRESSION
exposes harmful recessive genes that are eliminated by selection

Solution :is useful in overcoming inbreeding depression
10849.

Question : Explain what are outbreeding devices. Give its importance

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Solution :Majority of flowering plants produce hermaphrodite flowers and pollen grains are likely to come in CONTACT with the stigma of the same flower. Continued selfpollination result in inbreeding depression. Flowering plants have developed MANY devices to discourage self pollination and to encourage CROSS pollination. So hybrid species are OBTAINED which can be very fertile.
10850.

Question : Out of 'X' pairs of ribs in humans only 'Y' Pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation.

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X = 12, Y = 7 TRUE ribs are attached dorsally to vertebral coloumn and VENTRALLY to the sternum.
X = 12, Y = 5 True ribs are attached dorsally to vertebral column and sternum on the two ends
X = 24, Y=7 True ribs are dorsally attached to vertebral column but are free on ventral side.
X = 24, Y = 12 True ribs are dorsally attached to vertebral column but are free on ventral side.

Answer :A