Free Biodiversity and Variety of Life MCQs with Answers

3051. In bryophytes sterile hair are produced seen sex organs to keep them:

• A. Dry
• B. Wet
• C. Warm
• D. Covered

Explanation: Bryophytes have wet sterile hairs in between the sex organs to keep them protected from drying condition and for protection of reproductive cells.

3052. A pollen _ grain germinates and develops into :

• A. Prothallus
• B. Saprophyte
• C. Micro gametophyte
• D. Mega gametophyte

Explanation: When a pollen grain germinates, it develops into a micro gametophyte, which carries the male gametes (sperm cells) for fertilization. Therefore, the correct option is 'Micro gametophyte' as it directly relates to the development of pollen grains. The other options, Prothallus, Saprophyte, and Mega gametophyte, are incorrect because they do not represent the specific structure that pollen grains develop into during plant reproduction.

3053. All of the following belongs to mosses Except:

• A. Funaria
• B. Polytrichum
• C. Sphagnum
• D. Club mosses

Explanation: Club mosses, also known as Lycopodiopsida or Lycophytes, are a distinct group of plants that are not classified as mosses. They belong to the Lycopodiaceae family. Therefore, the correct option is 'Club mosses' as it is not a member of the mosses group. Funaria, Polytrichum, and Sphagnum are all genera of true mosses, while Club mosses belong to a different group.

3054. Wheat, maize and rice are the member of family:

• A. Fabaceae
• B. Solanaceae
• C. Poaceae
• D. Mimosaceae

Explanation: The correct answer is Poaceae. Wheat, maize, and rice belong to the Poaceae family, commonly known as the grass family, due to their similar characteristics such as grass-like appearance, parallel-veined leaves, and small flowers in spikelets. The other options are incorrect because they belong to different plant families with distinct characteristics that do not include wheat, maize, or rice.

3055. Which of the following are the pioneer group to develop true roots and true leaves,

• A. Psilopsida
• B. Sphenopsida
• C. Pteropsida
• D. Lycopsida

Explanation: Among the options given, the pioneer group to develop true roots and true leaves is Pteropsida.Pteropsida: This group includes ferns, which have true roots, stems, and leaves, making them the pioneers in developing all three structures.Therefore, Pteropsida is the correct option as it represents the group that has true roots and true leaves. Psilopsida lacks true roots and leaves, Sphenopsida has reduced and scale-like leaves, and Lycopsida has small and scale-like leaves as well.

3056. Equisetum is the living member of:

• A. Sphenopslda
• B. Psilopsida
• C. Pteropsida
• D. Lycopsida

Explanation: Equisetum, commonly known as horsetail, is a genus of vascular plants that is a living member of the division Sphenopsida. Sphenopsida is also sometimes called Equisetopsida because it contains only one living genus, Equisetum.

3057. All of the following plants possess actinomorphic flowers EXCEPT:

• A. Rose
• B. Potato
• C. Apple
• D. Pea

Explanation: Peas have zygomorphic flowers with bilateral symmetry, as it does not possess actinomorphic flowers.

3058. All of the following are gametophyte plants EXCEPT:

• A. Liver wort
• B. Equisetum
• C. Funaria
• D. Polytrichum

Explanation: Equisetum, also known as horsetails, are not gametophyte plants. They have a dominant sporophyte stage in their life cycle.

3059. Monotropa is a

• A. Total parasite
• B. Total saprophyte
• C. Partial parasite
• D. Partial saprophyte

Explanation: Monotropa is a total saprophyte. It obtains its nutrients entirely from decaying organic matter in the soil, and it does not perform photosynthesis as it lacks chlorophyll.

3060. Which one is microsporangium?

• A. Pollen grains
• B. Stamens
• C. Pollen sacs
• D. Female cone

Explanation: Pollen sacs, also known as microsporangia, are structures found within the anthers of stamens. They are responsible for producing and containing the microspores, which develop into pollen grains.