(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Biology

Mention whether the following statement is true or false. Correct the false statement by altering the last word only.

The cell wall of the root cell is a differentially permeable membrane. 

Give reason for the following:

If you uproot a plant from the soil, its leaves soon wilt.

Explain the mechanism of closing and opening of the stomata. 

Concentration of mineral nutrient elements is higher inside the root hairs than in the surrounding soil. How do roots take them in from the soil?

Given below is the diagrammatic representation of the transverse section of a part of a plant. Study it and answer the questions that follow: 

(a) Name the part of the plant that is shown
(b) Label the parts 1 to 6
(c) Write the functions of parts 3 and 5 

Study the diagram given below and answer the questions that follow:

1. Name the process being studied in the above experiment.
2. Explain the process mentioned in (a) above
3. Why is oil placed over water?
4. What do we observe with regard to the level of water when this set-up is placed in (1) bright sunlight, (2) humid conditions and (3) windy days?
5. Mention any three adaptations found in plants to foster the process mentioned in (a) above

During the pairing of chromosomes in meiosis, the ________ chromosomes come to lie side by side.

“First meiotic division is the reduction division” what does the word ‘reduction’ refer to in this statement? 

Mention whether the following statement is (T) Or (F). Give reason in support of your answer. 

The unfertilized human egg has half the number of chromosomes of the body cells. 

Complete the following statement by choosing the correct alternative from the choice given in below :

The dorsal root ganglion of the spinal cord contains cell bodies of  ________ neurons.

State whether the following statement is true (T) or false (F).

A double chain of ganglia, one on each side of the nerve cord belongs to the spinal cord.

Differentiate between following pair with reference to the aspect in bracket.

Sensory nerve and motor nerve (direction of impulse carried)

Given below is a structure, write its special functional activity.

Myelin sheath and ……………

Write the function of synapse.

Write the function of Association neuron.

Write the function of medullary sheath.

A gland having endocrine as well as exocrine function is

Exophthalmic goitre is caused due to the overactivity of ______.

what do we refer to in the nervous system when we say:

sensory, motors and association ……………….

Rearrange the following in correct sequence pertaining to what is given within brackets at the end.

Effector - Sensory neuron - Receptor - Motor neuron - Stimulus - Central nervous system Response (Reflex arc)