Selina solutions for कॉनसाइस बायोलॅाजी [इंग्रजी] इयत्ता ९ आईसीएसई chapter 6 - Seeds - Structure and Germination [Latest edition]

Which one of the following plants parts is correctly matched with one of its stated characteristic?

Seeds sown very deep in the soil fail to germinate because they

Is the following statement true (T) or false (F)? 

Maize grain is fruit and not a seed. (T/F)

Is the following statement true (T) or false (F)? 

Seeds fell in a flower-bed from the previous crop usually do not germinate until the next sowing season. 

Is the following statement true (T) or false (F)?

Oxygen is necessary for the germination of seeds.

Name the following : 

A monocotyledonous endospermic seed.

Name the following : 

A chemical used in experiments which absorbs oxygen.

Name the following: 

Part of the plumule above the embryonic axis of the seed.

 Name the following : 

A plant that shows viviparous germination.

Name the following : 

The layer of the endosperm of maize rich in protein.

Name the following : 

A seed with folded plumule leaves.

Is the following statement true (T) or false (F)? 

Some seeds have no cotyledons at all.

Fill in the blanks: 

In bean seeds, ______ grows faster and the seeds are brought ______ ground.

Fill in the blanks:

_______ is a protective layer of radicle and ________ protects the rolled plumule.

Fill in the blanks: 

A seed is protected by ________ and __________ .

Fill in the blanks: 

Seeds absorb water through __________ which also helps in the diffusion of respiratory gases.

Fill in the blanks: 

Rich, wheat and maize are rich in _________ food.

Arrange the following set of a term in order, so as to be in a logical sequence. Rewrite the correct order.

Embryo, 1^st male gamete, zygote, egg cell, micropyle.

Arrange the following set of a term in order, so as to be in a logical sequence. Rewrite the correct order.

Zygote, embryo, seed, allogamy, fusion of gametes.

Arrange the following set of a term in order, so as to be in a logical sequence. Rewrite the correct order.

Seed coat bursts, hypocotyls elongates, radicle grows downward, hypocotyls forms loop above the soil, epicotyls elongates.

What is the difference between an embryo and a seed?

Give any two examples each of endospermic (albuminous) seeds, and non-endospermic (exalbuminous) seeds.

Germinated grams are considered highly nutritive. What is the reason for this belief?

Why do we not use the terms maize fruit and maize seed? What do we say instead?

What is the function of the following in a seed?

Seed coat

What is the function of the following in a seed?

Micropyle

What is the function of the following in a seed?

Cotyledons

What is the function of the following in a seed?

Radicle

What is the function of the following in a seed?

Plumule

Suggest an experiment to prove that a suitable temperature is necessary for germination.

Sometimes the potatoes kept in a basket during the late rainy season start giving out small shoots. Would you call it germination? Give reasons in support of your answer.

Give two differences in the following pairs :

Epigeal germination and hypogeal germination 

Give Two Differences in the Following Pairs:

Coleorhiza and coleoptile 

Give two difference in the following pairs:

Bean seed and maize grain

Differentiate between germination and vivipary.

Justify the statement that the maize grain is a 'one-seeded fruit'. 

What is the role played by the hypocotyl in epigeal germination?

With regard to germination in bean seed, answer the following question: 

State the function of the 'micropyle'.

With regard to germination in bean seed, answer the following question:

Name the part of the seed that grows into the seedling.

With regard to germination in bean seed, answer the following question:

Draw a neat labelled diagram of the structure named above. 

With regard to germination in bean seed, answer the following question:

Name the part of the seed that provides nutrition for the growing seedling.