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Reproduction in Plants

Description: reproduction
Number of Questions: 17
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Tags: botany Reproduction in Plants Reproduction in Organisms
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Gemmules are the asexual reproductive structures of which of the following organisms?

  1. Penicillium

  2. Hydra

  3. Sponge

  4. Paramecium

  5. Amoeba


Correct Option: C
Explanation:

Common asexual reproductive structures are conidia (Penicillium), buds (Hydra) and gemmules (sponge).

The basal part of ovule is known as ________.

  1. funicle

  2. hilum

  3. micropyle

  4. chalaza

  5. none of the above


Correct Option: D
Explanation:

Opposite the micropylar end, is the chalaza, representing the basal part of ovule.

At maturity, a typical angiosperm embryo sac is ________.

  1. 8-nucleated and 7-celled

  2. 7-nucleate and 8-celled

  3. 8-nucleate and 8-celled

  4. 7-nucleated and 7-celled

  5. None of the above


Correct Option: A
Explanation:

A typical angiosperm embryo sac, at maturity, though 8-nucleate is 7-celled. The large central cell has two polar nuclei.

Epicotyl in monocotyledons has a shoot apex and a few leaf primordia enclosed in which of the following structures?

  1. Coleorrhiza

  2. Coleoptile

  3. Scutellum

  4. Plumule

  5. Radicle


Correct Option: B
Explanation:

Epicotyl has a shoot apex and a few leaf primordia enclosed in a hollow foliar structure, the coleoptile.

Which of the following fruits is an example of collection of capsules?

  1. Sweet gum

  2. Sycamore

  3. Magnolia

  4. Tuliptree

  5. None of the above


Correct Option: A
Explanation:

Sweet gum, is an example of collection of capsules.

Pineapple belongs to which of the following anatomical categories of fruits?

  1. Simple fruits

  2. Aggregate fruits

  3. Multiple fruits

  4. Accessory fruits

  5. Pepo


Correct Option: C
Explanation:

Multiple fruits are formed from the fused ovaries of multiple flowers. An example for a multiple fruit is pineapple.

Seedless bananas and grapes are _____.

  1. haploid

  2. diploid

  3. triploid

  4. polyploid

  5. none of the above


Correct Option: C
Explanation:

Seedless bananas and grapes are triploids.

Which of the following is a schizocarp fruit?

  1. Radish seed

  2. Wheat

  3. Carrot seed

  4. Beet

  5. Strawberry


Correct Option: C
Explanation:

Schizocarp – carrot seed

Flowers which do not open at all are known as ____.

  1. chasmogamous

  2. cleistogamous

  3. autogamous

  4. geitonogamous

  5. none of the above


Correct Option: B
Explanation:

Cleistogamous flowers do not open at all, e.g.,  common pansy.

Which of the following fruits is an example of true berry?

  1. Blueberry

  2. Blackberry

  3. Raspberry

  4. Strawberry

  5. Mulberry


Correct Option: A
Explanation:

Blueberry, Blackcurrant, Redcurrant, Gooseberry, Tomato, Eggplant, Guava, Lucuma, Chili are examples of true berry.

This residual, persistent nucellus in some seeds is known as ___________.

  1. perisperm

  2. pericarp

  3. root cap

  4. apomixis

  5. none of the above


Correct Option: A
Explanation:

In some seeds such as black pepper and beet, remnants of nucellus are also persistent. This residual, persistent nucellus is the perisperm.

An achene-like fruit derived from the individual florets in a capitulum is known as __________.

  1. nut

  2. follicle

  3. utricle

  4. cypsela

  5. samara


Correct Option: D
Explanation:

Cypsela - An achene-like fruit derived from the individual florets in a capitulum (e.g. dandelion).

Transfer of pollen grains from anther to the stigma of a different plant is known as which of the following type of pollination?

  1. Autogamy

  2. Geitonogamy

  3. Xenogamy

  4. Heterogamy

  5. None of the above


Correct Option: C
Explanation:

Xenogamy: Transfer of pollen grains from anther to the stigma of a different plant.

The innermost wall layer of microsporangium is known as __________.

  1. endothecium

  2. endodermis

  3. tapetum

  4. epidermis

  5. none of the above


Correct Option: C
Explanation:

Microsporangium is generally surrounded by four wall layers, the epidermis, endothecium, middle layers and the tapetum (from outer to inner surface). The innermost wall layer is the tapetum.

The white kernel of a tender coconut is ________.

  1. free-nuclear endosperm

  2. cellular endosperm

  3. epicarp

  4. mesocarp

  5. endocarp


Correct Option: B
Explanation:

The white kernel of a tender coconut is cellular endosperm.

Which of the following living organisms is known as ‘the Terror of Bengal'?

  1. Bryophyllum

  2. Bengal Tiger

  3. Mangroove plant

  4. Water hyacinth

  5. None of the above


Correct Option: D
Explanation:

The aquatic plant ‘water hyacinth’ is one of the most invasive weeds found growing wherever there is standing water. It drains oxygen from the water, which leads to death of fishes.

Which of the following vegetative propagules in angiosperms is incorrectly matched?

  1. Eyes : potato

  2. Rhizome : ginger

  3. Bulbil : Agave

  4. Offset : banana


Correct Option: D
Explanation:

Offset of water hyacinth, Rhizome of ginger and banana. Offset of water hyacinth, Rhizome of ginger and banana.

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