CBSE : Practice Questions and Answers

Which of the following does not need water to live?

Which of the following can make its own food?

What do all living things do?

Fish breathe through

Cockroaches and Butterflies breathe through.................in their bodies

............do not have sense organs

Coal tar has an ............ Smell

An example of fossil fuel is

Wind pollinated flowers are

Which one is produced as a result of double fertilisation ?

What is the function of filiform apparatus at the entrance into ovule ?

Unisexuality of flowers prevents

Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called as

Total number of nuclei involved in double fertilisation is

Sexual reproduction of flowering plants was discovered by

Secondary nucleus present in the middle of embryo sac is

Pollination of Lotus is accomplished through

Pollination by snails and slugs is

Pollen grains are able to tolerate extremes of temperature and desiccation as its exine is made of

Passage of pollen tube through micropyle while reaching the embryo sac is