Give reasons for the following:
i) Some seeds have hard crunchy parts.
ii) Some plants like water hyacinth can float on water.

Open in App

Solution

Some seeds have hard crunchy parts due to the presence of seed coat which is made of sclerenchyma tissue responsible for hardness of the seed.
Some plants like water hyacinth can float on water due to the presence of aerenchyma tissue.

Suggest Corrections

Similar questions

Q. Give biological reasons for the following:
A closed can of dried seeds bursts open if some water enters it by accidents.

Q. Give reasons for the following :

(a) Aquatic plants can float on water.
(b) Intercellular spaces are absent in sclerenchymatous tissues.
(c) We get a crunchy and granular feeling, when we chew pear fruit.
(d) Branches of a tree move and bend freely in high wind velocity.
(e) It is difficult to pull out the husk of a coconut.

Q. Some seeds like soap nuts have very hard shell because

Some plants have seeds with hooks for

Seeds of some plants germinate immediately after shedding from the plants while in other plants they require a period of rest before germination. The later phenomena is called as dormancy. Give the reasons for seed dormancy and some methods to break it.

Join BYJU'S Learning Program

Give reasons for the following:i) Some seeds have hard crunchy parts.ii) Some plants like water hyacinth can float on water.

Some seeds have hard crunchy parts due to the presence of seed coat which is made of sclerenchyma tissue responsible for hardness of the seed.Some plants like water hyacinth can float on water due to the presence of aerenchyma tissue.

Give reasons for the following:
i) Some seeds have hard crunchy parts.
ii) Some plants like water hyacinth can float on water.

Some seeds have hard crunchy parts due to the presence of seed coat which is made of sclerenchyma tissue responsible for hardness of the seed.
Some plants like water hyacinth can float on water due to the presence of aerenchyma tissue.