Biology · Environmental Studies

Plant Reproduction and Germination

835 Questions

Plant reproduction and germination involve seed structure, cotyledon function, and dispersal mechanisms. These core botany concepts frequently appear in general science sections. Practice these questions to ensure better retention.

Seed germination typesSeed dispersal mechanismsCotyledons and albuminous seedsCryptogamic plantsPhanerogams reproduction

Plant Reproduction and Germination Questions

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

To which group would a plant belong that produces spores, has vascular tissues and bears seeds without fruits

  1. Bryophytes

  2. Pteridophytes

  3. Gymnosperms

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

Gymnosperms are defined as seed-bearing vascular plants where the seeds are not enclosed within an ovary or fruit. Bryophytes lack vascular tissue, and pteridophytes do not produce seeds.

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

Gymnosperms are naked seeded plants because

  1. There is no fruit

  2. There is no ovule

  3. There is no fertilization

  4. There is no ovary and fruit
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gymnosperms are called naked-seeded plants because they lack an ovary, which in angiosperms develops into the fruit wall enclosing the seeds.

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

Which of the following plants produces seeds but not flowers : -

  1. Maize

  2. Mint

  3. Peepal

  4. Pinus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
 Pinus is a gymnospermic plant. Ovules of Pinus are uncovered which lie on the megasporophyll, hence these plants do not have flowers. However it produces seeds (from ovule after fertilization) like the other three plants mentioned, all of which are angiosperms.

So, the correct answer is 'Pinus'.
Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

How many generations are present in the seed of gymnosperms?

  1. $2$
  2. $3$
  3. $1$
  4. $4$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Unlike bryophytes and pteridophytes, in gymnosperm, the male and female gametophytes don't have an independent free-living existence. They remain attached to the sporophytes. After fertilization, these developed into an embryo and the ovule into seeds. Seeds are not covered. So 3 generation live inside one seed of gymnosperm- the embryo and the female gametophytic tissue and the seed coat and the nucellus which is the female sporophytic tissue.

So, the correct option is '3'

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

Fruits are not formed in gymnosperms, because

  1. Fertilization is absent

  2. Pollination is absent

  3. Seeds are not formed

  4. Ovary is absent
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fruits are not formed in gymnosperms due to absence of ovary. The ovules of a gymnosperm do not develop in an ovary but are "naked". Seeds develop from the ovules that are found in the developed ovaries but in the case of gymnosperms, the ovules are located directly on the surface of the flower or cone. 

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

How many generations found in seed of gymnosperm?

  1. 1

  2. 2

  3. 4

  4. 3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The sporophyte (2n) phase is the longest phase. The gametophytes (1n), microspores and megaspores, are reduced in size. This phase may take more than one year between pollination and fertilization, while the pollen tube grows towards the megasporocyte (2n), which undergoes meiosis into megaspores. The megaspores will mature into eggs (1n) .
Gymnosperm seed is made up of three generations of tissues. 
1) maternal sporophyte tissue (seed coat and nucellus), 
2) gametophyte 
3) daughter sporophyte (embryo)

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

The characters of gymnosperms are

  1. Seeds are naked

  2. Fruits are absent

  3. True carpel absent

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gymnosperms were the first plants to have seeds. They are often referred to as having naked seeds because they do not have flowers and they develop on the surface of the reproductive structures of the plants rather than being contained in a specialized ovary. These seeds are often found on the surface of cones and short stalks.

Gymnosperms are a group of plants with the following unique characteristics:

  • They do not have an outer covering or shell around their seeds.
  • They do not produce flowers.
  • They do not produce fruits.
  • They are pollinated by the wind.

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

Choose the correct answers from the alternatives given.
In which one of the following groups would you place a plant which produces seeds but lacks fruits

  1. Bryophytes

  2. Pteridophytes

  3. Gymnosperms

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

The gymnosperms are the plants in which the ovules are not enclosed by an ovary wall and remain exposed, both before and after fertilization. This is that developers fertilization are not covered that is they are naked.


So, the correct option is gymnosperm.

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

Choose the correct answers from the alternatives given.
Fruits are not formed in gymnosperms because:

  1. they are seedless

  2. they are not pollinated

  3. the process of fertilization does not occur

  4. they have no ovary
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gymnosperms have no ovary, they can never produce fruit.  

Seeds develop from the ovules which are found in the developed ovaries or fruit, but in the case of gymnosperms, the ovules are located directly on the surface of the flower or cone.  Yews and ginkgoes develop fruit-like structures, but their seed is not inside these organs, which makes them gymnosperms.
So the correct answer is 'They have no ovary'.