Question

1. identify x in the venn diagram given below.

a. embryo b. leaves c. seed coat d. cotyledons

1. ____ and __ are examples of ____ seeds.

a. pea, rice, wheat, dicot b. pea, gram, rajma, monocot c. rice, wheat, maize, monocot d. wheat, maize, rice, dicot

1. which of the following statements is not true about a seed?

a. it contains a living part called embryo.
b. it contains cotyledons that only provide protection to the growing embryo.
c. embryo inside the seed remains dormant in unfavourable conditions.
d. the seed is a mature ovule after fertilisation.

1. state if the statements given below are true(t) or false(f). choose the correct answer from the options given below.

• all plants reproduce only by seeds.
• only the leaves from the plant is used for making paper.
• fruits bear seeds, which can be single or multiple in number.
• medicines we get from plants can only be used on wounds.

a. ttft b. ffft c. fftf d. tftf

Explanation:

1. The cotyledons store food and also provide nutrients to the growing embryo, not just protection. So the overlapping part X in the Venn - diagram for'storage of food' and 'either one or two in number in each seed' is cotyledons.
2. Rice, wheat, maize are monocot seeds. Pea, gram, rajma are dicot seeds.
3. Cotyledons do not only provide protection to the growing embryo but also store food and provide nutrients.
4. Not all plants reproduce only by seeds (some by vegetative propagation etc.), not only leaves are used for making paper, fruits bear seeds which can be single or multiple, and medicines from plants are used in various ways not only on wounds.

Answer:

1. d. cotyledons
2. c. Rice, wheat, maize, monocot
3. b. It contains cotyledons that only provide protection to the growing embryo.
4. c. FFTF