Tag: angiosperms

Questions Related to angiosperms

A herb is the one having.

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Green soft and shirt stems

  2. Woody short stems

  3. A number of flowers and fruits

  4. Annual growth

Show answer
Correct Option: A
Explanation:

A. Green, soft & short stems are the characteristic feature of herbs.

B. Woody short stems are seen in shrubs but not in herbs 
C. The number of flowers and fruits are seen mainly in trees. It can be seen in some herbs like banana but not all.
D. Some herbs do have annual growth but not all herbs are annual. they can be perennial such as rosemary etc.
So, the correct answer is 'Green soft and shirt stems'.
 

Which of the following is/ are an angiospermic hydrophyte?

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Hydrilla

  2. Vallisneria

  3. Zizyphus

  4. Both A and B

Show answer
Correct Option: D
Explanation:

Hydrilla andVallisneria are angiospermic hydrophytes because they are flowering plants which have adapted to living in aquatic environments. They are also referred to as macrophytes.

So, the correct answer is 'Both A and B'.

National tree of India is

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Mangifera indica

  2. Azadirachta indica

  3. Ficus bengalensis

  4. Ficus religiosa

Show answer
Correct Option: C
Explanation:

National tree of India is Banyan tree. The botanical name of the banyan tree is Ficus bengalensis.

So, the correct option is 'Ficus bengalensis'.

Which group possesses vessels in its xylem

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Pteridophytes

  2. Angiosperms

  3. Gymnosperms

  4. Both B and C

Show answer
Correct Option: B
Explanation:

Vessel members are the principal water-conducting cells in angiosperms (though most species also have tracheids) and are characterized by areas that lack both primary and secondary cell walls, known as perforations. Water flows relatively unimpeded from vessel to vessel through these perforations, though fractures and disruptions from air bubbles are also more likely. 

So, the correct answer is 'Angiosperms.'

An angiosperm lacking vessels is

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Trochodendron

  2. Acacia

  3. Salix

  4. Dendrocalamus

Show answer
Correct Option: A
Explanation:

Trochodendron is a genus of flowering plants with one living species, Trochodendron aralioides, and six extinct species known from the fossil record. Trochodendron aralioides is an evergreen tree or large shrub growing to 20 m tall. Trochodendron and Tetracentron lack vessel elements in their wood, a quite unusual feature in angiosperms. 

So, the correct answer is 'Trochodendron.'

An angiosperm having monarch xylem is?

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Casuarina

  2. Trapa

  3. Strychnos

  4. Urtica

Show answer
Correct Option: B

Dominance of angiosperms can be considered due to evolution of

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Seed

  2. Fruit

  3. Vascular system

  4. Extensive root system

Show answer
Correct Option: B
Explanation:
Global domination of any species depends on its ability to effectively reproduce. Thus, vascular system or extensive root system, though essential for survival, will not increase the population of the species. Angiosperms developed from gymnosperms or the plants with naked seeds, meaning that seeds evolved before the time of angiosperms. The presence of fruit makes angiosperms reproduce successfully by protecting the seeds and increasing their chances of survival.
So, the correct answer is 'Fruit'.

Angiosperm lacking vessels is

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Mangifera

  2. Dillenia

  3. Magnolia

  4. Drimys.

Show answer
Correct Option: D
Explanation:
Vessels are only found in xylem of angiosperm but exceptionally it is also present in some Gymnosperms like Ephedra, Gnetum and Welwitschia. Vessels are absent in some Angiospermic plants such as Dracaena, Yucca, Dazinaria, Drimys.
So, the correct answer is 'Drimys.'

Vessels and companion cells occur in

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Thallophytes

  2. Bryophytes

  3. Pteridophytes

  4. Angiosperms

Show answer
Correct Option: D
Explanation:

Sieve-tube members of angiosperms are associated by living companion cells. In contrast to gymnosperms where the vascular system only has tracheids, both tracheids and vessels occur as water-conducting cells in most angiosperms.  

So, the correct answer is 'Angiosperms.'

Given below are assertion and reason. Point out if both are true with reason being correct explanation (A), both are true but reason is not correct explanation (B), assertion true but reason is wrong (C) and both are wrong (D).
Assertion. In angiosperms, transport of food and water is more efficient than gymnosperms and pteridophytes
Reason. In angiosperms, longitudinally arranged sieve elements and vessels with perforated end walls are present

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. A

  2. B

  3. C

  4. D

Show answer
Correct Option: A
Explanation:
Gymnosperms and pteridophytes lack the two vascular structures i.e., vessels and sieve elements. In angiosperms presence of vessels and sieve elements in addition to all other vascular tissues make their food and water transport more efficient.
So, the correct answer is 'A.'