Seeds: Structure and Germination

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Question
ICSEENIBI9010399

  1. Which one of the following plants parts is correctly matched with one of its stated characteristic?
  2. (a) Mango seed ___________ aleurone layer

    (b) Bean seed __________ endosperm

    (c) Maize grain __________ coleoptile

    (d) Wheat grain ___________ exalbuminous

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

    (a) cannot exert enough force to push the soil upward.

    (b) do not get enough sunlight.

    (c) get too much water.

    (d) do not get enough oxygen.

Solution

  1. (c) Maize grain______coleoptile
  2. (d) do not get enough oxygen

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Question
ICSEENIBI9010400

Are the following statements true (T) or false (F)?

A.

Some seeds have no cotyledons at all

B.

Maize grain is fruit and not a seed

C.

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

D.

Oxygen is necessary for the germination of seeds.

Solution

A. False
B. True
C. True
D. True

Question
ICSEENIBI9010401

Name the following :

(a) A monocotyledonous endospermic seed.

(b) A chemical used in experiments which absorbs oxygen.

(c) Part of the plumule above the embryonic axis of the seed.

(d) A plant which shows viviparous germination.

(e) The layer of endosperm of maize rich in protein.

(f) A seed with folded plumule leaves.

Solution

(a) Maize

(b) Pyrogallic acid

(c) Shoot

(d) Rhizophora

(e) Aleurone layer

(f) Bean

Question
ICSEENIBI9010402

Fill in the blanks:

(a) In bean seeds, ________ grows faster and the seeds are brought _________ ground.

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

(c) A seed is protected by ________ and __________ .

(d) Seeds absorb water through ________ which also helps in diffusion of respiratory gases.

(e) Rich, wheat and maize are rich in _________ food.

Solution

plumule, above

,

Coleorhizacoleoptile

,

seed coat, testa

,

micropyle

,

starch