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Reproduction and Development in Plants

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Number of Questions: 20
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Tags: 20 Development of Seeds and Fruits Seed
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From which part does the Cotyledons develop?

  1. Female gametophyte

  2. Embryos

  3. Seed

  4. Fruit

  5. Ovaries


Correct Option: B
Explanation:

Cotyledons develop from embryos.

Which type of dispersal of seeds is Myrmecochory?

  1. Dispersal by animals

  2. Dispersal by bats

  3. Dispersal by wind

  4. Dispersal by water

  5. Dispersal by ants


Correct Option: E
Explanation:

The dispersal of seeds by ants is known as Myrmecochory.

Which of the following seed does not get dispersed through anemochory?

  1. Pine

  2. Orchids

  3. Mucuna

  4. Maple

  5. Milkweed


Correct Option: C
Explanation:

Mucuna seeds do not get dispersed through anemochory (wind dispersal). It gets dispersed through hydrochory (water dispersal).

Which of the following structures nourish the embryo or young plant?

  1. Seed coat

  2. Pericarp

  3. Ovary

  4. Seed

  5. Endosperm


Correct Option: D
Explanation:

The seed nourishes the embryo or young plant.

How does the mint multiplies vegetatively?

  1. By adventitious buds

  2. By means of tubers

  3. By means of suckers

  4. By means of runners

  5. By means of cutting


Correct Option: C
Explanation:

Mint multiplies vegetatively by means of suckers.

Seeds are mature _______ and fruits are mature _______.

  1. ovules, ovaries

  2. ovaries, ovules

  3. stamens, ovules

  4. ovaries, stamens

  5. ovules, stamens


Correct Option: A
Explanation:

Seeds are mature ovules and fruits are mature ovaries.

What is the main function of cotyledons in a seed?

  1. It provides protection to the radicle.

  2. It stores food material.

  3. It supplies food to the young embryo.

  4. It helps in seed germination.

  5. It provides protection to the plumule.


Correct Option: D
Explanation:

The main function of cotyledons in a seed is that it helps in seed germination.

Double fertilization occurs in _______.

  1. bryophytes

  2. pteridophytes

  3. gymnosperms

  4. angiosperms

  5. gnetophytes


Correct Option: D
Explanation:

Double fertilization occurs in angiosperms.

How many megaspores are formed when meiosis occurs in ovules?

  1. 2

  2. 4

  3. 6

  4. 8

  5. 10


Correct Option: B
Explanation:

4 megaspores are formed when meiosis occurs in ovules.

Where does the meiotic division take place in an ovule?

  1. Nucleus

  2. Megaspore mother cell

  3. Megaspore

  4. Archesporium

  5. Synergids


Correct Option: B
Explanation:

The meiotic division takes place in an ovule in megaspore mother cell.

How many nuclei does an embryo sac have?

  1. 2

  2. 4

  3. 6

  4. 8

  5. 10


Correct Option: D
Explanation:

The embryo sac has 8 nuclei.

Which of the following structures becomes the pollen tube of a flowering plant?

  1. Female gametophyte

  2. Male gamete

  3. Male gametophyte

  4. Female gamete

  5. Germinating spore


Correct Option: C
Explanation:

A pollen tube of a flowering plant is a male gametophyte.

What is the milky water of green coconuts?

  1. Liquid endosperm

  2. Liquid ovule

  3. Liquid embryo

  4. Liquid ovary

  5. Liquid anther


Correct Option: A
Explanation:

The milky water of green coconuts is the Liquid endosperm.

What is the part of the embryo above the cotyledons called?

  1. Cotyledon

  2. Epicotyl

  3. Endosperm

  4. Hypocotyl

  5. Stigma


Correct Option: B
Explanation:

The part of the embryo above the cotyledons is called epicotyl.

What is the term given to the undifferentiated tissue formed after triple fusion?

  1. Ovary

  2. Style

  3. Stigma

  4. Endosperm

  5. Seed coat


Correct Option: D
Explanation:

The term given to the undifferentiated tissue formed after triple fusion is endosperm.

After which phenomenon, the non - essential organs of the flower degenerate?

  1. Ovulation

  2. Fertilization

  3. Imbibition

  4. Pollination

  5. Exposure to light


Correct Option: D
Explanation:

The non - essential organs of the flower degenerate after pollination.

The covering of the plumule is called _________.

  1. petal

  2. sepal

  3. coleoptile

  4. embryo sac

  5. none of the above


Correct Option: C
Explanation:

The covering of the plumule is called coleoptile.

Parthenocarpy occurs in which of the following?

  1. Neem

  2. Mango

  3. Banana

  4. Pomegranate

  5. Guava


Correct Option: C
Explanation:

Parthenocarpy occurs in banana.

Which of the following is not an adaptation seen in a papilionaceous flower to ensure cross-pollination?

  1. Large petals

  2. Scent/Fragrance

  3. Nectar

  4. Bright petals

  5. Small, rounded petals


Correct Option: E
Explanation:

Small, rounded petals is not an adaptation seen in a papilionaceous flower to ensure cross-pollination.

Which of the following is an example of Monoecious plant?

  1. Date palm

  2. Tomato

  3. Rose

  4. Cucumber


Correct Option: D
Explanation:

Cucumber is an example of Monoecious plant. Cucumber is an example of Monoecious plant.

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