Tag: biology

Questions Related to biology

Which one have maximum power of adaptation?

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Bryophyta

  2. Pteridophyta

  3. Gymnosperm

  4. Angiosperm

Show answer
Correct Option: D

Angiosperms have dominated the land flora primarily because of their

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Domestication by man

  2. Power of adaptability in diverse habitat

  3. Property of producing large number of seeds

  4. Nature of self pollination

Show answer
Correct Option: B
Explanation:

Angiosperms are most diverse and widespread of all plant groups. Their dominance is due to the power of adaptability in diverse habitat. They are well adapted to terrestrial life and occur in diverse habitats like cold tundra to hot tropical and even desert areas. They also thrive well in the aquatic habitat. Therefore, they being the most successful to have dominated the land flora. Hence option B is correct.

Monocotyledonous plants are those in which the seed contains ................ cotyledon/s.

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Two

  2. One

  3. Three

  4. None of these

Show answer
Correct Option: B
Explanation:
Cotyledons are important parts of the embryo found in a seed. They are the first parts that emerge from the seedling when it germinates. Monocotyledons are plants that have only one cotyledon. They also have other characteristics, such as flower parts in multiples of threes. This means they could have three, six or nine petals, or they could have sepals that make up their flowers. They also have adventitious roots. Garlic is a monocotyledon. Dicotyledons have two cotyledons.
Therefore, the correct answer is option B.

Angiosperms show _____________.

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Monospory

  2. Bispory

  3. Trispory

  4. Tetraspory.

Show answer
Correct Option: B

Vessels and companion cells occur in

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Angiosperm

  2. Gymnosperms

  3. Pteridophytes

  4. Viruses

Show answer
Correct Option: A

Angiosperms have dominated the land primarily by their ________________.

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Power of adaptability to diverse habitat

  2. Nature of pollination

  3. Domestication by humans

  4. Large number of seeds

Show answer
Correct Option: A

Angiosperms differ from gymnosperms having

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Covered seeds

  2. Large leaves

  3. Seeds

  4. Tap roots.

Show answer
Correct Option: A

What is true of angiosperms ?

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Seeds are naked

  2. They have tracheids only

  3. They are not cryptogams

  4. They lack companion cells.

Show answer
Correct Option: C

Greatest extent of adaptation to various environments is found in __________.

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Gymnosperms

  2. Bryophytes

  3. Ferns

  4. Angiosperms.

Show answer
Correct Option: D
Explanation:
Greatest extent of adaptation to various environments is found in angiosperms. Angiosperms grow on most of the places on earth. They grow in hot (Cactus) and cold deserts. They also grow in high altitude of Himalayas, in water (Hydrilla)  and all types of terrestrial habitat.

So, the correct answer is 'Angiosperms.'

Phloem of angiosperms differs from that of other vascular plants in presence of ______________.

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Vessels

  2. Companion cells

  3. Tylosoldes

  4. Albuminous cells

Show answer
Correct Option: B