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8751.

Identify the acidic and basic salts from the following- CaSO4, NH4Cl , K2CO3 , MgCl2

Answer»

Identify the acidic and basic salts from the following-

CaSO4, NH4Cl , K2CO3 , MgCl2

8752.

a ) Name two examples of each biodegradable and nonbiodegradable pollutants B ) what are the two things moving through an ecosystem C) what is ecosystem D) define food web E ) why are Bacteria and fungi called decomposers

Answer»

a ) Name two examples of each biodegradable and nonbiodegradable pollutants

B ) what are the two things moving through an ecosystem

C) what is ecosystem

D) define food web

E ) why are Bacteria and fungi called decomposers

8753.

What is the fullform of DNA, RNA, mRNA,tRNA,and rRNA

Answer» What is the fullform of DNA, RNA, mRNA,tRNA,and rRNA
8754.

What is meant by genotype and phenotype?

Answer» What is meant by genotype and phenotype?
8755.

How do pons act as a relay centre?(3 marks)

Answer»

How do pons act as a relay centre?(3 marks)

8756.

What is conjugate acid and conjugate base ?

Answer» What is conjugate acid and conjugate base ?
8757.

One of the following traits of the parents cannot be passed on their future generations.This trait is (A) Broad chin (B) pointed chin (C) scarred chin (D) cleft chin

Answer»

One of the following traits of the parents cannot be passed on their future generations.This trait is

(A) Broad chin

(B) pointed chin

(C) scarred chin

(D) cleft chin

8758.

Water evaporates through tiny openings present in the leaves known as:

Answer»

Water evaporates through tiny openings present in the leaves known as:


8759.

Which of the following are internal factors that a plant adapts to reduce transpiration?

Answer»

Which of the following are internal factors that a plant adapts to reduce transpiration?


8760.

Spore formation is the most common asexual method of reproduction in : (a) protozoa (b) tubers (c) fungi (d) algae

Answer»

Spore formation is the most common asexual method of reproduction in :
(a) protozoa
(b) tubers
(c) fungi
(d) algae

8761.

(a) Draw a labelled diagram of (i) a xylem vessel, and (ii) a sieve tube (or phloem). (b) What are the differences between the transport of materials in xylem and phloem ?

Answer»

(a) Draw a labelled diagram of (i) a xylem vessel, and (ii) a sieve tube (or phloem).
(b) What are the differences between the transport of materials in xylem and phloem ?

8762.

The presence of which of the following types of organs in two animals indicates that they are not derived from a common ancestor? (a) homologous organs (b) excretory organs (c) analogous organs (d) reproductive organs

Answer»

The presence of which of the following types of organs in two animals indicates that they are not derived from a common ancestor?
(a) homologous organs
(b) excretory organs
(c) analogous organs
(d) reproductive organs

8763.

Identify the parts of a neuron : 1)where information is acquired 2)through which information travels as an electrical impulses 3)where this impulses must be converted into a chemical signal for onward transmission.

Answer»

Identify the parts of a neuron :

1)where information is acquired

2)through which information travels as an electrical impulses

3)where this impulses must be converted into a chemical signal for onward transmission.

8764.

What is olfactory? Give examples related to this.

Answer»

What is olfactory? Give examples related to this.

8765.

If synaptic vesicles present in axon bulbs are underdeveloped due to genetic mutations, then possible effect would be ___________.

Answer»

If synaptic vesicles present in axon bulbs are underdeveloped due to genetic mutations, then possible effect would be ___________.


8766.

Evolutionary convergence is development of

Answer»

Evolutionary convergence is development of


8767.

When some disease spread around the town, Group A people were not affected by the diseases, while Group B people were affected and had to takemedicine to protect them against the disease. What could be the possible reason behind this different response towards the disease?

Answer» When some disease spread around the town, Group A people were not affected by the diseases, while Group B people were affected and had to takemedicine to protect them against the disease. What could be the possible reason behind this different response towards the disease?
8768.

Which of the following plant hormone induces dormancy of seeds?

Answer»

Which of the following plant hormone induces dormancy of seeds?


8769.

Shoots of a plant bends towards the light because

Answer»

Shoots of a plant bends towards the light because


8770.

Name the part of eye responsible for conversion of light into electrical impulses.

Answer» Name the part of eye responsible for conversion of light into electrical impulses.
8771.

How did Mendel explain that it is possible that a trait is inherited but not expressed in an organism?

Answer» How did Mendel explain that it is possible that a trait is inherited but not expressed in an organism?
8772.

What is placenta ? Describe its structure. State its functions in case of a pregnant human female.

Answer» What is placenta ? Describe its structure. State its functions in case of a pregnant human female.
8773.

Which is the correct statement regarding a cell membrane?

Answer»

Which is the correct statement regarding a cell membrane?


8774.

Only variation that confer and advantage to an individual organism will survive in a population. Do you agree with this statement? Why or why not?

Answer» Only variation that confer and advantage to an individual organism will survive in a population. Do you agree with this statement? Why or why not?
8775.

Reflex action is controlled by

Answer»

Reflex action is controlled by


8776.

(a) What is a gonad? (b) Why is it called primary sex organ? (c) Give its secondary function. [3 MARKS]

Answer» (a) What is a gonad?
(b) Why is it called primary sex organ?
(c) Give its secondary function. [3 MARKS]
8777.

How can we help manage solid waste?

Answer» How can we help manage solid waste?
8778.

Which among the following substances are reabsorbed in nephron?

Answer»

Which among the following substances are reabsorbed in nephron?


8779.

What makes sucrose move in the phloem tissue after being pumped from leaves?

Answer»

What makes sucrose move in the phloem tissue after being pumped from leaves?


8780.

The hormone which regulates the amount of glucose in the blood by converting excess of glucose into glycogen is (1)_______. The hormone which regulates glucose in the blood by converting glycogen back to glucose whenever required is (2)_______.

Answer»

The hormone which regulates the amount of glucose in the blood by converting excess of glucose into glycogen is (1)_______. The hormone which regulates glucose in the blood by converting glycogen back to glucose whenever required is (2)_______.


8781.

What would happen to people who have an open wound and whose blood does not clot naturally?

Answer»

What would happen to people who have an open wound and whose blood does not clot naturally?


8782.

Which of the following is incorrect about hormones?

Answer»

Which of the following is incorrect about hormones?


8783.

(a) List two reasons for the appearance of variations among the progeny formed by sexual reproduction. (b) (i) Name the part marked 'A' in the diagram. (ii) How does 'A' reaches part 'B' ? (iii)State the importance of the part 'C'. (iv) What happens to the part marked 'D' after fertilisation is over?

Answer» (a) List two reasons for the appearance of variations among the progeny formed by sexual reproduction.

(b)

(i) Name the part marked 'A' in the diagram.

(ii) How does 'A' reaches part 'B' ?

(iii)State the importance of the part 'C'.

(iv) What happens to the part marked 'D' after fertilisation is over?
8784.

Which of the following is one of the goals of Human Genone project?

Answer»

Which of the following is one of the goals of Human Genone project?


8785.

Which was (were) the food revolution(s) introduced recently to enhance food production?

Answer»

Which was (were) the food revolution(s) introduced recently to enhance food production?

8786.

A student while observing an embryo of a pea seed in the laboratory listed various parts of the embryo as given below : Testa, Tegmen, Radicle, Plumule, Micropyle, Cotyledon. On examining the list the teacher remarked that only three parts are correct Select three correct parts from the above list : (a) Testa, Radicle, Cotyledon (b) Tegmen, Radicle, Micropyle (c) Cotyledon, Plumule, Testa (d) Radicle, Cotyledon, Plumule

Answer» A student while observing an embryo of a pea seed in the laboratory listed various parts of the embryo as given below :

Testa, Tegmen, Radicle, Plumule, Micropyle, Cotyledon.

On examining the list the teacher remarked that only three parts are correct

Select three correct parts from the above list :

(a) Testa, Radicle, Cotyledon

(b) Tegmen, Radicle, Micropyle

(c) Cotyledon, Plumule, Testa

(d) Radicle, Cotyledon, Plumule
8787.

The fibres of atrio-ventricular bundle are highly contractile and conducts a ___

Answer»

The fibres of atrio-ventricular bundle are highly contractile and conducts a ___


8788.

Match the following. ClassificationDisease1) Viral diseaseA) Anthrax2) Fungal diseaseB) Malaria3) Bacterial diseaseC) Ringworm4) Protozoan diseaseD) Chikungunya

Answer»

Match the following.

ClassificationDisease1) Viral diseaseA) Anthrax2) Fungal diseaseB) Malaria3) Bacterial diseaseC) Ringworm4) Protozoan diseaseD) Chikungunya


8789.

Name the 7 layer which covers testes?

Answer» Name the 7 layer which covers testes?
8790.

What is a secretory cell?

Answer»

What is a secretory cell?

8791.

500 calories = ___ joules2090

Answer»

500 calories = ___ joules


  1. 2090


8792.

What is the digestive period of human

Answer» What is the digestive period of human
8793.

What is the function of salivary glands?

Answer»

What is the function of salivary glands?

8794.

The term "water pollution" can be defined in a number of ways. Which of the following statements does not give the correct definition?

Answer»

The term "water pollution" can be defined in a number of ways. Which of the following statements does not give the correct definition?


8795.

A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is

Answer»

A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is


8796.

The amino acid which are synthesized in the body are known as:

Answer»

The amino acid which are synthesized in the body are known as:


8797.

The substances which can create cancer are known as ___ .

Answer»

The substances which can create cancer are known as ___ .

8798.

………………………………is the ability of a single cell to divide and produce all of the differentiated cells in an organism.

Answer»

………………………………is the ability of a single cell to divide and produce all of the differentiated cells in an organism.


8799.

Most of the plants reproduce by sexual method. Name two plants which can reproduce asexually.

Answer» Most of the plants reproduce by sexual method. Name two plants which can reproduce asexually.
8800.

Pyruvate dehydrogenase is the enzyme that converts __________.

Answer»

Pyruvate dehydrogenase is the enzyme that converts __________.