Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Which one have maximum power of adaptation?

  1. Bryophyta

  2. Pteridophyta

  3. Gymnosperm

  4. Angiosperm
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Angiosperms have the greatest power of adaptation due to their diverse reproductive strategies, efficient vascular systems, and ability to thrive in varied terrestrial habitats. They are the most dominant and diverse group of plants on Earth.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Angiosperms have dominated the land flora primarily because of their

  1. Domestication by man

  2. Power of adaptability in diverse habitat

  3. Property of producing large number of seeds

  4. Nature of self pollination
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

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

  1. Two

  2. One

  3. Three

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
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.
Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Vessels and companion cells occur in

  1. Angiosperm

  2. Gymnosperms

  3. Pteridophytes

  4. Viruses
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vessels and companion cells are defining characteristics of the xylem and phloem, respectively, in angiosperms. Gymnosperms typically lack vessels (using tracheids instead) and companion cells (using albuminous cells).

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Angiosperms have dominated the land primarily by their ________________.

  1. Power of adaptability to diverse habitat

  2. Nature of pollination

  3. Domestication by humans

  4. Large number of seeds
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Angiosperms dominate the land primarily because of their high adaptability to diverse habitats and efficient reproductive mechanisms. Their ability to colonize various environments is their key evolutionary advantage.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

What is true of angiosperms ?

  1. Seeds are naked

  2. They have tracheids only

  3. They are not cryptogams

  4. They lack companion cells.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Angiosperms are phanerogams (seed-bearing plants), not cryptogams (non-seed-bearing plants). They have enclosed seeds, possess both tracheids and vessels, and have companion cells.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

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

  1. Gymnosperms

  2. Bryophytes

  3. Ferns

  4. Angiosperms.
Reveal answer Fill a bubble to check yourself
D Correct answer
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.'
Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

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

  1. Vessels

  2. Companion cells

  3. Tylosoldes

  4. Albuminous cells
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Companion cells are specialized parenchyma cells associated with sieve tube elements in the phloem of angiosperms. Gymnosperms use albuminous cells instead.