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2351.

Can I check whether Ian healthy or not without any medical test? Please give some home tips.

Answer» Can I check whether Ian healthy or not without any medical test? Please give some home tips.
2352.

The scientific method of naming of organisms is known as

Answer»

The scientific method of naming of organisms is known as


2353.

Select the odd one out w.r.t type of causative agent the options are. A,herpes,b.hepatitis B,c.genital warts,d.gonnorhoea

Answer» Select the odd one out w.r.t type of causative agent the options are. A,herpes,b.hepatitis B,c.genital warts,d.gonnorhoea
2354.

(a) What is an exocrine gland? Name two exocrine glands. (b) What is an endocrine gland? Name two endocrine glands.

Answer»

(a) What is an exocrine gland? Name two exocrine glands.

(b) What is an endocrine gland? Name two endocrine glands.

2355.

What must be done to maintain personal cleanliness?

Answer»

What must be done to maintain personal cleanliness?

2356.

Hydra develops a bulb-like projection that finally changes into a new individual. What is the projection called?

Answer» Hydra develops a bulb-like projection that finally changes into a new individual. What is the projection called?
2357.

This is a marbled duck. They are generally found in some parts of Europe but seasonally can be seen in India. Explain why? [2 MARKS]

Answer»

This is a marbled duck. They are generally found in some parts of Europe but seasonally can be seen in India. Explain why?
[2 MARKS]

2358.

Which of the following is NOT a non-communicable disease?

Answer»

Which of the following is NOT a non-communicable disease?

2359.

Even though a very few cells in a C4 plant carry out the biosynthetic – Calvin pathway, yet they are highly productive. Let’s discuss why?

Answer» Even though a very few cells in a C4 plant carry out the biosynthetic – Calvin pathway, yet they are highly productive. Let’s discuss why?
2360.

Why is capillary force theory not valid for gymnosperms? What is the problem with thrblunt ends of tracheids ?

Answer» Why is capillary force theory not valid for gymnosperms? What is the problem with thr
blunt ends of tracheids ?
2361.

Predation and parasitism are which type of interactions

Answer»

Predation and parasitism are which type of interactions


2362.

What does evidence suggest about deep sea vents?

Answer»

What does evidence suggest about deep sea vents?


2363.

Study the following two figures and answer the question that follows: The figures given above show two trains positioned at the same place at t = 0 and travelling in the same direction on parallel tracks thereon. Q35. A bacterium divides every minute into two. If the death rate is negligible, then which of the following curves namely A, B, C and D, will represent the population growth of the bacteria? के लिए निर्देश: निम्नलिखित दो आकृतियों का अध्ययन कीजिए और आगे आने वाले प्रश्नों के उत्तर दीजिए ऊपर दी गई आकृति t = 0 एक ही स्थान पर दो ट्रेनों की स्थिति बताती है और वे समांतर पटरियों पर एक ही दिशा में चल रही हैं। Q35. एक जीवाणु हर मिनट दो भागों में टूटता है। यदि मृत्यु दर नगणय हो, तो A, B, C और D में से निम्नलिखित में से कौन-सा वक्र जीवाणु की जनसंख्या में वृद्धि को दर्शाएगा?

Answer»

Study the following two figures and answer the question that follows:

The figures given above show two trains positioned at the same place at t = 0 and travelling in the same direction on parallel tracks thereon.

Q35. A bacterium divides every minute into two. If the death rate is negligible, then which of the following curves namely A, B, C and D, will represent the population growth of the bacteria?

के लिए निर्देश: निम्नलिखित दो आकृतियों का अध्ययन कीजिए और आगे आने वाले प्रश्नों के उत्तर दीजिए

ऊपर दी गई आकृति t = 0 एक ही स्थान पर दो ट्रेनों की स्थिति बताती है और वे समांतर पटरियों पर एक ही दिशा में चल रही हैं।

Q35. एक जीवाणु हर मिनट दो भागों में टूटता है। यदि मृत्यु दर नगणय हो, तो A, B, C और D में से निम्नलिखित में से कौन-सा वक्र जीवाणु की जनसंख्या में वृद्धि को दर्शाएगा?


2364.

Read the food chain given below: I-Grass→Grasshopper→Frog II-Wheat→rat→Snake→Hawk Which of the two consumers, snake or hawk, will get more energy (according to the given food chain)?

Answer»

Read the food chain given below:

I-Grass→Grasshopper→Frog

II-Wheat→rat→Snake→Hawk

Which of the two consumers, snake or hawk, will get more energy (according to the given food chain)?


2365.

What is Red Data Book?

Answer»

What is Red Data Book?



2366.

A balanced diet consists of __________.

Answer»

A balanced diet consists of __________.


2367.

Why is the speaker’s childhood described as ‘a forgotten boredom’?

Answer»

Why is the speaker’s childhood described as ‘a forgotten boredom’?

2368.

(a) What are the various purposes for which the forest trees are cut? (b) What is the effect of deforestation on wild animals?

Answer»

(a) What are the various purposes for which the forest trees are cut?
(b) What is the effect of deforestation on wild animals?

2369.

Can a forest regenerate in a short period of time?

Answer» Can a forest regenerate in a short period of time?
2370.

Which parts of a plant is/are responsible for the process of transpiration?

Answer»

Which parts of a plant is/are responsible for the process of transpiration?


2371.

(a) Why is it is necessary to dry the harvested food grains before storage ? (b) What are the two ways in which farmers store food grains ?

Answer»

(a) Why is it is necessary to dry the harvested food grains before storage ?

(b) What are the two ways in which farmers store food grains ?

2372.

When does puberty end?

Answer»

When does puberty end?

2373.

Which of the following diseases are caused by bacteria?

Answer»

Which of the following diseases are caused by bacteria?


2374.

Can you work out how many trophic levels human beings function at in a food chain?

Answer» Can you work out how many trophic levels human beings function at in a food chain?
2375.

Name the implement used in sowing.

Answer»

Name the implement used in sowing.

2376.

What is parallel evolution? It's difference with adaptive evolution?

Answer» What is parallel evolution? It's difference with adaptive evolution?
2377.

Which of the following is the correct representation of the different stages of growth in human beings?

Answer»

Which of the following is the correct representation of the different stages of growth in human beings?


2378.

Why are bacteria and fungi called decomposers? List any two advantages of decomposers to the environment.

Answer» Why are bacteria and fungi called decomposers? List any two advantages of decomposers to the environment.
2379.

Select the correct statements about increase in height from the following statements.i. A sudden increase in height is seen during adolescence due to growth hormones.ii. Girls grow faster than boys initially during adolescence.iii. At the end of adolescence, maximum height is reached.

Answer»

Select the correct statements about increase in height from the following statements.



i. A sudden increase in height is seen during adolescence due to growth hormones.

ii. Girls grow faster than boys initially during adolescence.

iii. At the end of adolescence, maximum height is reached.



2380.

What is the difference between mutualism and commensalism?

Answer» What is the difference between mutualism and commensalism?
2381.

How many species of edible plants are identified on Earth?

Answer»

How many species of edible plants are identified on Earth?


2382.

During mushroom cultivation, a step where a thin layer of soil is spread over the compost is known as:

Answer»

During mushroom cultivation, a step where a thin layer of soil is spread over the compost is known as:



2383.

Which tool is used to mix soil properly before sowing the seeds?

Answer»

Which tool is used to mix soil properly before sowing the seeds?



2384.

The organisms that help in the transfer of pollen grains are called _____.

Answer»

The organisms that help in the transfer of pollen grains are called _____.


2385.

___ is the sharing of car rides so that more than one person travel in the car, mainly to reduce fuel consumption.

Answer» ___ is the sharing of car rides so that more than one person travel in the car, mainly to reduce fuel consumption.
2386.

Animals that are diminishing to a level of extinction are called ________ .

Answer»

Animals that are diminishing to a level of extinction are called ________ .



2387.

Identify the part of the cell where the following reaction takes place.Pyruvate (Presence of oxygen)−−−−−−−−−−−−→ Carbon dioxide + Water + Energy

Answer»

Identify the part of the cell where the following reaction takes place.

Pyruvate (Presence of oxygen)−−−−−−−−−−− Carbon dioxide + Water + Energy

2388.

Which of the following statements is wrong with respect to arthropods?

Answer» Which of the following statements is wrong with respect to arthropods?
2389.

Drugs which cause the insensible condition in human beings are called __ drugs.

Answer» Drugs which cause the insensible condition in human beings are called __ drugs.
2390.

The rate of increase in human population and the rate of species extinction are ________ .

Answer»

The rate of increase in human population and the rate of species extinction are ________ .

2391.

Reflex actions are under the control of

Answer»

Reflex actions are under the control of


2392.

What is the poet’s feeling towards childhood?

Answer»

What is the poet’s feeling towards childhood?

2393.

The powerhouse of the cell is

Answer»

The powerhouse of the cell is


2394.

What is a fertiliser?

Answer» What is a fertiliser?
2395.

In external fertilisation, complete development of the embryo takes place ___________.

Answer»

In external fertilisation, complete development of the embryo takes place ___________.



2396.

What does the following sentence mean? "Decomposers bring about cyclic exchange of materials between biotic community and the environment"

Answer» What does the following sentence mean? "Decomposers bring about cyclic exchange of materials between biotic community and the environment"
2397.

What are the consequences of the following conditions below?(a) A cell containing higher water concentration than the surrounding medium(b) A cell having low water concentration than the surrounding medium.(c) A cell having equal water concentration to its surrounding medium.

Answer» What are the consequences of the following conditions below?



(a) A cell containing higher water concentration than the surrounding medium



(b) A cell having low water concentration than the surrounding medium.



(c) A cell having equal water concentration to its surrounding medium.
2398.

The graph given below shows how the lining of the uterus in a female who has achieved puberty varies with time.Examine the graph and answer the following questions.1. What is happening between A and B?2. Mark the corresponding points in the second menstrual cycle when the same happens.3. Fertilization occurs on day 16 of the second menstrual cycle. How do you expect the graph to behave after point C? Will the pattern of the first and second months be followed?

Answer» The graph given below shows how the lining of the uterus in a female who has achieved puberty varies with time.

Examine the graph and answer the following questions.







1. What is happening between A and B?

2. Mark the corresponding points in the second menstrual cycle when the same happens.

3. Fertilization occurs on day 16 of the second menstrual cycle. How do you expect the graph to behave after point C? Will the pattern of the first and second months be followed?
2399.

Which of the following organisms can reproduce sexually?

Answer»

Which of the following organisms can reproduce sexually?



2400.

Mycorrhiza is a

Answer»

Mycorrhiza is a