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2601.

Humans use 10% of their cerebral capacity. though dollfin use 20% of it..so how come humans are more develpedd than them...?

Answer»

Humans use 10% of their cerebral capacity. though dollfin use 20% of it..so how come humans are more develpedd than them...?

2602.

what is complement mediated cell lysis

Answer» what is complement mediated cell lysis
2603.

What happens when histamine is released in the human body?

Answer» What happens when histamine is released in the human body?
2604.

why are offspring's that are produced a sexually similar and not identical to parent

Answer» why are offspring's that are produced a sexually similar and not identical to parent
2605.

The first vaccine ever made was against ________ disease.

Answer»

The first vaccine ever made was against ________ disease.


2606.

Despite natures monsoon's bounty, failure to sustain water availability underground is due to:

Answer»

Despite natures monsoon's bounty, failure to sustain water availability underground is due to:



2607.

Write 4 differences between homologous organ and analogous organ.

Answer»

Write 4 differences between homologous organ and analogous organ.

2608.

The growth regulator that retards ageing of plant organs is:

Answer»

The growth regulator that retards ageing of plant organs is:



2609.

One of the following has not been produced from wild cabbage by the process of artificial selection. This one is : (a) kohlrabi (b) cabbage (c) spinach (d) kale

Answer»

One of the following has not been produced from wild cabbage by the process of artificial selection. This one is :
(a) kohlrabi
(b) cabbage
(c) spinach
(d) kale

2610.

Platyhelminthes show _______ symmetry.

Answer»

Platyhelminthes show _______ symmetry.



2611.

If tall is dominant over short, then which of the following character will be expressed when both the dominant allele and recessive allele are present?

Answer»

If tall is dominant over short, then which of the following character will be expressed when both the dominant allele and recessive allele are present?


2612.

Q20)Homopolymers and copolymers are type of A)condensation polymers B)addition polymers C)linear polymers D)branched polymers

Answer» Q20)Homopolymers and copolymers are type of A)condensation polymers B)addition polymers C)linear polymers D)branched polymers
2613.

what is the distance between eukaryotic and prokaryotic?

Answer» what is the distance between eukaryotic and prokaryotic?
2614.

Question 26 The correct sequence of organs in the male reproductive system for transport of sperms is (a) testis → vasdeferens → urethra (b) testis → ureter → urethra (c) testis → urethra → ureter (d) testis → vasdeferens → ureter

Answer» Question 26
The correct sequence of organs in the male reproductive system for transport of sperms is

(a) testis → vasdeferens → urethra
(b) testis → ureter → urethra
(c) testis → urethra → ureter
(d) testis → vasdeferens → ureter
2615.

(क) लोककथा में गोमा बिना खेत जोते अपने बैलों को हाँहकर घर की ओर क्यों चल पड़ा? (ख) गोमा को पेड़ के नीचे बैठा देखकर बूढ़ी अम्मा ने उससे क्या कहा? (ग) गोमा ने अपने खेतों को क्यों जोता?

Answer»

(क) लोककथा में गोमा बिना खेत जोते अपने बैलों को हाँहकर घर की ओर क्यों चल पड़ा?



(ख) गोमा को पेड़ के नीचे बैठा देखकर बूढ़ी अम्मा ने उससे क्या कहा?



(ग) गोमा ने अपने खेतों को क्यों जोता?

2616.

How does transportation in Human beings work?

Answer» How does transportation in Human beings work?
2617.

(a) What is lymph ? State two major functions of lymph. (b) What is meant by saying that the blood pressure of a person is 120/80 ?

Answer»

(a) What is lymph ? State two major functions of lymph.
(b) What is meant by saying that the blood pressure of a person is 120/80 ?

2618.

How many hours does human body takes to digest it's food?

Answer»

How many hours does human body takes to digest it's food?

2619.

(a) What is ecological interaction?(b) Give examples for ecological interaction.

Answer» (a) What is ecological interaction?

(b) Give examples for ecological interaction.


2620.

Why is the heart divided into various chambers?

Answer»

Why is the heart divided into various chambers?



2621.

From the figure, identify stolon.

Answer»

From the figure, identify stolon.

2622.

What are the general characteristics of Kingdom Animalia? [3 MARKS]

Answer»

What are the general characteristics of Kingdom Animalia? [3 MARKS]

2623.

what are cut and who cut when blunt end and when scicky end is produce in DNA

Answer» what are cut and who cut when blunt end and when scicky end is produce in DNA
2624.

An iron ball of radius 0.3 cm falls through a column of oil of density 0.94g/cm3 . If it attains a terminal velocity of 0.54 m/s . What is the viscosity of oil ?density of the iron is 7.8 g/cm3

Answer» An iron ball of radius 0.3 cm falls through a column of oil of density 0.94g/cm3 . If it attains a terminal velocity of 0.54 m/s . What is the viscosity of oil ?density of the iron is 7.8 g/cm3
2625.

Water moves into sieve tubes from xylem due to ………………

Answer»

Water moves into sieve tubes from xylem due to ………………



2626.

नीचे कुछ दुर्घटनाओं के बारे में लिखा हुआ है; जैसे– (क) सड़क दुर्घटना –सड़क पर होती है। (ख) ट्रेन दुर्घटना –ट्रेन की पटरी पर होती है। (ग) हवाई दुर्घटना –धरती या आसमान कहीं भी हो सकती है। (घ) नौका दुर्घटना –जल में हो सकती है। इनके कारणों में मानवीय भूल, जानबूझकर और प्राकृतिक रूप से संबंधित कोई भी कारण हो सकता है। मान लो कि तुम्हारे आस-पास ऐसी कोई भी दुर्घटना घट जाती है तो तुम क्या-क्या करोगे? (क) क्या तुम स्वयं को बचाओगे? (ख) किसी और को बचाओगे? (ग) किसी अन्य को बचने और बचाने का उपाय बताओगे? (घ) किसी अन्य को उस दुर्घटना के बारे में बताओगे और बुलाओगे? (ङ) क्या तुम चुपचाप रह जाओगे? इसमें तुम जो भी करना चाहते हो, उसका कारण भी बताओ।

Answer»

नीचे कुछ दुर्घटनाओं के बारे में लिखा हुआ है; जैसे–



(क) सड़क दुर्घटना –सड़क पर होती है।



(ख) ट्रेन दुर्घटना –ट्रेन की पटरी पर होती है।



(ग) हवाई दुर्घटना –धरती या आसमान कहीं भी हो सकती है।



(घ) नौका दुर्घटना –जल में हो सकती है।



इनके कारणों में मानवीय भूल, जानबूझकर और प्राकृतिक रूप से संबंधित कोई भी कारण हो सकता है। मान लो कि तुम्हारे आस-पास ऐसी कोई भी दुर्घटना घट जाती है तो तुम क्या-क्या करोगे?



(क) क्या तुम स्वयं को बचाओगे?



(ख) किसी और को बचाओगे?



(ग) किसी अन्य को बचने और बचाने का उपाय बताओगे?



(घ) किसी अन्य को उस दुर्घटना के बारे में बताओगे और बुलाओगे?



(ङ) क्या तुम चुपचाप रह जाओगे?



इसमें तुम जो भी करना चाहते हो, उसका कारण भी बताओ।

2627.

During ETS, there is water formation as well from NADH2 and FADH2. From each NADH2 and each FADH2, 1 water moiety is obtained. Then if we look at the oxidation of 1 glucose molecule during respiration, there is formation of 10 NADH2 and 2 FADH2. So by above information, when this 10 NADH2 and 2 FADH2 will undergo ETS there should be formation of 12 water moiety, but in contrast we see only 6 water moiety in the equation of respiration. Why?

Answer» During ETS, there is water formation as well from NADH2 and FADH2. From each NADH2 and each FADH2, 1 water moiety is obtained. Then if we look at the oxidation of 1 glucose molecule during respiration, there is formation of 10 NADH2 and 2 FADH2. So by above information, when this 10 NADH2 and 2 FADH2 will undergo ETS there should be formation of 12 water moiety, but in contrast we see only 6 water moiety in the equation of respiration. Why?
2628.

Mobilization of food stored in germinating seeds is triggered by:

Answer»

Mobilization of food stored in germinating seeds is triggered by:


2629.

Which precautions to follow to maintain the reproductive health ?

Answer» Which precautions to follow to maintain the reproductive health ?
2630.

Why do organisms reproduce, even though reproduction is not as vital as respiration, excretion, etc. at the expense of energy?

Answer»

Why do organisms reproduce, even though reproduction is not as vital as respiration, excretion, etc. at the expense of energy?



2631.

A sugarcane field consist of little variations when compared to butterfly population. The reason could be

Answer»

A sugarcane field consist of little variations when compared to butterfly population. The reason could be



2632.

The ___ is generated through osmotically driven inflow of water into cells across a selectively permeable membrane.

Answer»

The ___ is generated through osmotically driven inflow of water into cells across a selectively permeable membrane.


2633.

110.Across the surface of shell ,field is discontinuous. Explain in detail?

Answer» 110.Across the surface of shell ,field is discontinuous. Explain in detail?
2634.

One of the following controls the peristaltic movements of the alimentary canal. This one is : (a) cerebrum (b) cerebellum (c) pons (d) medulla

Answer»

One of the following controls the peristaltic movements of the alimentary canal. This one is :

(a) cerebrum

(b) cerebellum

(c) pons

(d) medulla

2635.

'Whenever our nation faces a threat, or some major calamity happens, don't we all stand together with a sense of emotional oneness to fight against evil forces and unnatural situations?' In groups of six, research on the occasions when 'India' came together (e.g. tsumani, earthquake at Bhuj, Ladakh flash floods, Mumbai Blasts)Make a PowerPoint presentation of about 5-7 minutes. You can collect information by surfing the net and through other sources like books, magazines and newspapers. Focus on: Rescue, Relief, Rehabilitation, interview with victims and volunteers, united we serve. Alternatively, prepare a creative presentation (charts, collage etc). Each member will take turn to speak on a particular aspect of the given topic.

Answer»

'Whenever our nation faces a threat, or some major calamity happens, don't we all stand together with a sense of emotional oneness to fight against evil forces and unnatural situations?' In groups of six, research on the occasions when 'India' came together (e.g. tsumani, earthquake at Bhuj, Ladakh flash floods, Mumbai Blasts)



Make a PowerPoint presentation of about 5-7 minutes. You can collect information by surfing the net and through other sources like books, magazines and newspapers. Focus on: Rescue, Relief, Rehabilitation, interview with victims and volunteers, united we serve. Alternatively, prepare a creative presentation (charts, collage etc). Each member will take turn to speak on a particular aspect of the given topic.

2636.

State the three Mendel's laws of inheritance.

Answer»

State the three Mendel's laws of inheritance.

2637.

Why terrestrial plants die if their roots remain water logged

Answer»

Why terrestrial plants die if their roots remain water logged

2638.

In plants , the role of abcisic acid is

Answer»

In plants , the role of abcisic acid is

2639.

Select the substrates for salivary amylase from the following:

Answer»

Select the substrates for salivary amylase from the following:



2640.

Read the given statements A. IVF is a treatment for infertility when a woman is able to produce an ovum, however, problems of the Fallopian tube makes fertilization difficult. B. Asexual reproduction is a rapid and easier method of multiplication. C. Unicellular organisms reproduce by binary fission are referred to as ‘immortals’ because the actual death of the parent does not occur. D. Metamorphosis is the transformation of an adult animal to larval form. Which of the given statements are correct?

Answer»

Read the given statements
A. IVF is a treatment for infertility when a woman is able to produce an ovum, however, problems of the Fallopian tube makes fertilization difficult.
B. Asexual reproduction is a rapid and easier method of multiplication.
C. Unicellular organisms reproduce by binary fission are referred to as ‘immortals’ because the actual death of the parent does not occur.
D. Metamorphosis is the transformation of an adult animal to larval form.
Which of the given statements are correct?


2641.

The glomerular filtrate consists of

Answer»

The glomerular filtrate consists of


2642.

What are the changes seen in girls at the time of puberty?

Answer» What are the changes seen in girls at the time of puberty?
2643.

Which of the following organisms shows budding?

Answer»

Which of the following organisms shows budding?


2644.

Can a teenager also release sperm? Under what conditions is it possible?

Answer» Can a teenager also release sperm? Under what conditions is it possible?
2645.

what is the difference between dialysis and ultrafilteration?

Answer» what is the difference between dialysis and ultrafilteration?
2646.

What is a bundle of neurons known as?

Answer»

What is a bundle of neurons known as?



2647.

Assertion (A): RQ value of fats and proteins is less than one Reason (R): Fats and proteins consume more oxygen than carbohydrates do, during their oxidation

Answer»

Assertion (A): RQ value of fats and proteins is less than one

Reason (R): Fats and proteins consume more oxygen than carbohydrates do, during their oxidation


2648.

Why crying at times lead to a runny nose?

Answer» Why crying at times lead to a runny nose?
2649.

How do Mendel's experiments show that traits are inherited independently?

Answer»

How do Mendel's experiments show that traits are inherited independently?



2650.

There are two similar glands P which are located on the top of two similar organs Q in the human body. The gland P are often called glands of emergency and they secrete a hormone R into the blood stream. The hormone R is secreted in large amounts when a person is frightened. It brings about temporary changes in the body which allow a lot of substance S from the liver to go into blood so as to provide a lot of energy in a very short time. This helps the person concerned to fight back or run away from the frightening situation.What are P, Q, R and S?

Answer» There are two similar glands P which are located on the top of two similar organs Q in the human body. The gland P are often called glands of emergency and they secrete a hormone R into the blood stream. The hormone R is secreted in large amounts when a person is frightened. It brings about temporary changes in the body which allow a lot of substance S from the liver to go into blood so as to provide a lot of energy in a very short time. This helps the person concerned to fight back or run away from the frightening situation.



What are P, Q, R and S?