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Question 15

Length of pollen tube depends on the distance between



(a) pollen grain and upper surface of stigma

(b) pollen grain on upper surface of stigma and ovule

(c) pollen grain in anther and upper surface of stigma

(d) upper surface of stigma and lower part of style

Which of the following agents are biotic pollinators?

Dominant character is represented by a capital letter and recessive by small letter. Which of the following alleleic pairs are possible in F1 generation ?

Which of the following is NOT an amphibian?

Backbone helps the body to:

1. 1

Pick the correct function(s) of a neutrophil.

• Name the chicks in the story.


• Who liked yellow things?


• What did Lalu eat one day?

Highly evolved vascular plants with flowers and heterosporous gametes are grouped together in _____

Question 11

How is the equal genetic contribution of male and female parents ensured in the progeny?

Which of the following organisms spreads disease?

‘X’ is essential micronutrient required in leaves and roots. Major function of ‘X’ is to perform metabolism of urea and ureids. Its deficiency causes leaf tip necrosis. Identify 'X'

• Is there anyone in your class whom you like?


• Do you want to be like him/her? Why?


• Do you know about the food that each animal eats?

Draw a well labelled diagram of:

(a) Internal structure of the mitochondrion.

(b) Internal structure of the chloroplast.

(c) Plant cell.

Mention some adaptation of fishes for the aquatic environment

Question 04(i)

Tick (√) the statements that are correct.

By eating rice alone, we can fulfil nutritional requirement of our body. ( )

Name the sources and functions of proteins. [2 MARKS]

Question 2

Where do plants get each of the raw materials required for photosynthesis?

Which of the following cell parts is a flexible structure and is selectively permeable?

_______ is a suspension of disease-producing microorganisms, modified by killing or weakening.

The lower chambers of heart which pump with the maximum pressure are called _________.

Shankar wants to grow disease resistant variety of a plant in an area. Which of the following method will help him to do so ?

Glucose produced during the process of photosynthesis is stored in the form of _____ in the plants

Read these lines from the poem:

Then soars like a ship

With only a sail

The movement of the tailless kite is compared to a ship with a sail. This is called a simile. Can you suggest what or who the following actions may be compared to?

He runs like __________________

He eats like__________________

She sings like__________________

It shines like__________________

It flies like__________________

Name some animals which have rib-cages.

In which of the following organisms, injury to one cell can lead to the death of the organism?

How are sprouts different from normal seed?

Identify the are the steps for wastewater treatment.

Question 21

Select the statements that describe characteristics of genes.



(i) Genes are the specific sequence of bases in a DNA molecule.

(ii) A gene does not code for proteins.

(iii) In individuals of a given species, a specific gene is located on a particular chromosome.

(iv) Each chromosome has only one gene.



(a) (i) and (ii)

(b) (i) and (iii)

(c) (i) and (iv)

(d) (ii) and (iv)

Complete the following flow chart :
[3 MARKS]

$Cell$ $\Rightarrow$ $\underset{–}{}$$\underset{–}{}$$\underset{–}{}$$\underset{–}{}$$\Rightarrow$$\underset{–}{}$$\underset{–}{}$$\underset{–}{}$$\underset{–}{}$$\Rightarrow$$\underset{–}{}$$\underset{–}{}$$\underset{–}{}$$\underset{–}{}$$\Rightarrow Organism$