Tag: pictorial feature of plant kingdom

Questions Related to pictorial feature of plant kingdom

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

Which of the following is a character of gymnospermous wood?

  1. Porous

  2. Diffused porous

  3. Ring porous

  4. Non-porous

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This appears to be a duplicate of question 496472 with the same options reordered. Gymnosperm wood lacks vessels and is non-porous, while porous woods are characteristics of angiosperms.

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

Which is characteristic feature of gymnosperms?

  1. Gymnosperms are homosporous

  2. The female and male gametophytes do not have independent free living existence

  3. Sporophyte is dependent on gametophyte

  4. The ovules are enclosed by ovary

  5. Pollen grains are released by megasporangium

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In gymnosperms, the gametophytes are reduced and dependent on the sporophyte, meaning they do not have an independent free-living existence.

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

Hydrostereom or transfusion tissue is found in ________

  1. Gymnosperm roots

  2. Gymnosperm leaves

  3. Gymnosperm stems

  4. All of the above

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Transfusion tissue is specifically located in the leaves of gymnosperms, where it facilitates the movement of water between the vascular bundles and the mesophyll cells.

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

Select the correct statement 

  1. Leaves of gymnosperms are not well adapted to extremes of climate.

  2. Gymnosperms are both homosporous and heterosporous.

  3. Salvinia, Ginkgo and Pinus are all gymnosperms.

  4. Sequoia is one of the tallest trees.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sequoia is one of the tallest trees. It is also known as the redwood tree. Leaves of gymnosperms are well adapted to the extreme of climate. Gymnosperms are heterosporous. They have both pollen and tubules. Salvinia is a pteridophyte whereas Ginkgo and Pinus are gymnosperms.

Thus, the correct answer is option D.

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

A plant in which fertilization occurs after the shedding of seed is

  1. <p>Orchis</p>

  2. <p> Ginkgo</p>

  3. <p> Viscum</p>

  4. None of the above

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ginkgo is a gymnosperm, a naked seeded plant in which seed is not enclosed inside the fruit. It is a dioecious plant in which the male and female species do not grow and produce reproductive organs at the same time. First, the female trees produce their seeds and then after four months, the pollen is produced to fertilize the female plant. Generally, the female plant produces two ovules both of which develop into seeds. The fertilization of seeds occurs via motile sperms. The fertilization occurs generally before or after the seeds are shed in autumn.

Thus, the correct answer is 'Ginkgo'.

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'.