Tag: angiosperms

Questions Related to angiosperms

Which of the following pairs produces spores and seeds respectively?

  1. Monocot and dicot

  2. Algae and fungi

  3. Mosses and ferns

  4. Ferns and gymnosperms

  5. Gymnosperms and angiosperms


Correct Option: D

Which of the following is not a characteristic of gymnosperms?

  1. Seed plants

  2. Predominantly diploid

  3. to flower

  4. Conifers

  5. Naked seed plants


Correct Option: C

Which group of plants bear flowers?

  1. Pteridophytes

  2. Angiosperms

  3. Gymnosperms

  4. Bryophytes


Correct Option: B
Explanation:

Angiosperms or flowering plants include all those plants in which seeds are enclosed in the fruits. An ovule is well developed in angiosperms. Thus option B is the correct answer.

Vessels and companion cells are characteristics of

  1. Angiosperm

  2. Gymnosperm

  3. Pteridophyta

  4. Fern


Correct Option: A
Explanation:

A xylem vessel is a characteristic feature of an angiosperm and help in transportation of water. When it comes to transportation of food, it is the phloem that transports food materials from the leaves to the other parts. Sieve tube elements, companion cells, phloem parenchyma are the different components of the phloem. The sieve tube elements are arranged longitudinally with the companion cells and the pressure gradient in them is maintained by the companion cells

So, the correct answer is 'Angiosperm'

Vessels are found in

  1. All pteridophyta

  2. All angiosperms

  3. Some gymnosperms

  4. Both (B) and (C)


Correct Option: D
Explanation:

Vessels are present in most of the angiosperms and also in certain lower plants like Gnetum, Marsilea and Selaginella. Tracheids are found in pteridophytes, most of the gymnosperms and a few angiosperms.
Thus, the correct answer is option D.

Naked seeds are present in 

  1. Angiosperms

  2. Gymnosperms

  3. Spermatophyta

  4. None of the above


Correct Option: B

The smallest angiosperm is

  1. Mistletoe

  2. Rafflesia

  3. Wolfiella

  4. Wolffia


Correct Option: D
Explanation:

A. Mistletoe is a common name for obligate hemiparasitic plants of order santalales. For example, Viscum species etc. It grows as tangled stem mass which can be upto 5 feet.

B. Rafflesia bears the largest flowers in the plant kingdom.
C. Wolfiella is a small aquatic angiosperm which is around 10 mm.
D. Wolffia is the smallest angiosperm which is less than 2 mm in measurement.
So, the correct answer is 'Wolffia'.

Fruit bearing plants are

  1. Gymnosperms

  2. Dicotyledons

  3. Angiosperms

  4. Spermatophytes


Correct Option: C
Explanation:

Angiosperms are fruit-bearing plants because angiosperms are vascular seed plants in which the ovule (egg) is fertilized and develops into a seed in an enclosed hollow ovary. The ovary itself is usually enclosed in a flower, which after fertilization turns into fruit.

So, the correct option is C.

Liana is a

  1. Herb

  2. Shrub

  3. Tree

  4. Vine


Correct Option: D
Explanation:

A. Herbs are plants with short and pliable stems. For example, rice.

B. Shrubs are plants with a persistent, woody, short or medium stem. For example, lemon.
C. Trees are plants with long, erect, woody stems. For example, mango.
D. Vines are plants with the growth habit of climbing or trailing stems. example: Liana.
So, the correct answer is 'Vine'.

A marine angiosperm is?

  1. Hydrilla

  2. Potamogeton

  3. Zostera

  4. Sagittaria


Correct Option: C
Explanation:

Zoster marina, also called as 'seawrack' is a marine angiosperm because it lives in aquatic environments mainly marine in nature. It is rarely exposed to air. it anchors via its rhizomes into the sand bed. But it requires sunlight to grow, thus have long leaves. 

The correct answer is 'Zostera'.