English Medium इयत्ता १० - CBSE Question Bank Solutions for Science

Fill in the following blank with suitable word :

The.......... at the base of the carpel contains egg cells.

Fill in the following blank with suitable word :

The term used to refer to the transfer of pollen from the stamen of one flower to the carpel of another flower of the same species is...........

 Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.

Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.

What is made in anther of a flower?

What is made in ovary of a flower?

Explain the terms 'self pollination'

Explain the terms  'cross-pollination'?

How do the insects help in cross-pollination?

How is the process of pollination different from fertilization?

Explain the term 'fertilisation'.

 Give some examples of different modes of fertilisation in nature?

What type of plants reproduce by sexual reproduction method?

What is seed? What are the parts of a seed? Explain with the help of a labelled diagram.

Name the part of a seed which contains stored food.

Name the part of a seed which grows into root.

Name the part of a seed which grows into shoot.

In tobacco plant, the male gametes have 24 chromosomes.

What is the number of chromosomes in the female gamete?

In tobacco plant, the male gametes have 24 chromosomes.

 What is the number of chromosomes in the zygote?

What is meant by 'unisexual flowers' and 'bisexual flowers'? Give two examples of each.