Tag: structure of male and female reproductive structures

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Multiple choice botany modes of reproduction structure of male and female reproductive structures structure of ovule gynoecium

The monocotyledonous seed consists of one large and shield shaped cotyledon known as

  1. Aleurone layer

  2. Scutellum

  3. Coleoptile

  4. Hilum

  5. Coleorhiza
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The scutellum is referred to the eqivalence of a thin cotyledon in monocots. It is very thin with high surface area, and serves to absorb nutrients from the endosperm during germination.

Multiple choice botany modes of reproduction structure of male and female reproductive structures structure of ovule gynoecium

Study of seeds is a part of

  1. Pomology

  2. Morphology

  3. Vegetative morphology

  4. Reproductive morphology
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Study of seed is part of reproductive morphology because during study of seed, we observe the processes occuring after the sexual reproduction of plants and its growing into a plant. 
 The correct option is 'Reproductive morphology'.

Multiple choice botany modes of reproduction structure of male and female reproductive structures structure of ovule gynoecium

Seed of black pepper is

  1. Endospermic

  2. Exalbuminous

  3. Acotyledonous

  4. Perispermic
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A. Endospermic seed- Reserve food material present in endosperm.

B. Exalbuminous- Reserve food material present in cotyledons.
C. Acotyledonous- Seed which lack cotyledons, e.g. Orchids.
D. Perispermic- Seed which contain perisperm are perispermic seed,it occur in the seeds of black pepper, coffee, castor, cardamum, nymphaea.
So, the correct answer is 'Perispermic'.

Multiple choice botany modes of reproduction structure of male and female reproductive structures structure of ovule gynoecium

Ovule integument gets transformed into

  1. Seed

  2. Seed coat

  3. Fruit wall

  4. Cotyledons
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
After fertilisation in the flower, ovule gets transformed into the seed. The outer integument of the ovule becomes Testa and the inner integument becomes Tagmen. Testa and Tagmen are the two layers of the seed coat. The outer layer of seed coat is Testa which is very tough and the inner layer of seed coat is Tagmen which is very delicate. Hence, integuments get transformed into the seed coat.
So, the correct answer is B.
Multiple choice botany modes of reproduction structure of male and female reproductive structures structure of ovule gynoecium

Identify the wrong statement regarding post fertilization development.

  1. Ovary wall develops into pericarp.

  2. Outer integument of ovule develops into tegmen.

  3. Ovule develops into seed.

  4. Ovary develops into fruit.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
After fertilization has occurred in the ovule, many post fertilization changes take place like:
• Ovary wall develops into the pericarp of the fruit.
• Outer integument develops into testa and inner integument develops into tegmen.
• Ovule develops into the seed.
• Ovary develops into the fruit. 
Hence, statement B given in the question is incorrect. So, the correct answer is B.
Multiple choice botany modes of reproduction structure of male and female reproductive structures structure of ovule gynoecium

Pericarp of fruit develops from

  1. Wall of ovary

  2. Nucellus

  3. Funicle

  4. Seed coat
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The outer most layer of the fleshy fruits is called as pericarp developed from the ovary wall of the flower and surrounds the seeds. Fruits are the mature ovaries of one or more flowers.

So the correct option is 'Wall of ovary'.

Multiple choice botany modes of reproduction structure of male and female reproductive structures structure of ovule gynoecium

In Pea, wrinkling of seeds is due to nonformation of starch because of the absence of enzyme

  1. Amylase

  2. Invertase

  3. Branching enzyme

  4. Diastase.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In pea, the gene which controls starch synthesis also controls the shape of the seed.

In the pea plant with wrinkled seeds, this gene is not involved in the synthesis of starch due to the absence of enzyme starch synthase. It is a branched enzyme.

So, the correct option is ‘Branching enzyme’.