Biology

Plant Biology and Classification

1,796 Questions

Plant Biology and Classification deals with the taxonomy, evolution, and morphological features of the plant kingdom. This collection offers practice questions on plant groups, taxonomic hierarchies, and specific plant characteristics. The questions are tailored for students preparing for biology competitive exams.

Plant taxonomyPteridophytesAngiospermsPlant morphologyAlgae and bryophytesClassification systems

Plant Biology and Classification Questions

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Strobilanthes kunthiana differs from bamboo in

  1. Being monocarpic

  2. Length of juvenile phase

  3. Being polycarpic

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bamboo can be monocarpic or polycarpic whereas Strobilanthes kunthiana is a monocarpic plant. The juvenile phase of bamboo can vary from 3-120 years and the juvenile phase of Strobilanthes kunthiana can vary from 8-16 years.

So, the correct option is 'Length of juvenile phase'. 

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Select the mismatched pair.

  1. Smallest angiosperm - Rafflesia

  2. Tallest angiosperm - Eucalyptus regnans

  3. Marine angiosperms - Zostera, Thalassia

  4. Angiosperm with smallest seed - Orchid

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Smallest angiosperm is Wolffia microscopici, while Rafflesia arnoldii is the parasitic plant with the world's largest flower.

So the correct option is A.

Multiple choice biology classification of plants phanerogams gymnosperms 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
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ferns reproduce via spores, while gymnosperms are seed-bearing plants that do not produce flowers.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

A marine angiosperm is?

  1. Hydrilla

  2. Potamogeton

  3. Zostera

  4. Sagittaria
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Which of the following is/ are an angiospermic hydrophyte?

  1. Hydrilla

  2. Vallisneria

  3. Zizyphus

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
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'.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

How do gymnosperms and angioperms differ from each other?

  1. Gymnosperms have naked seed but angiosperms have seed coat

  2. Gymnosperm have leaves but angiosperms do not have leaves

  3. Gymnosperms are seed bearing plant but seed is absent in angiosperm

  4. Both A and B
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Angiosperms, also called flowering plants, have seeds that are enclosed within an ovary and have a seed coat (usually a fruit), while in gymnosperms flowers or fruits are absent and the seeds are naked. So, they are also called naked seeds. These seeds are present on the surface of scales or leaves.
So, the correct answer is 'Gymnosperms have naked seed but angiosperms have seed coat'.
Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Eggs do not occur in archegonia in

  1. Bryophyta

  2. Pteridophyta

  3. Angiosperms

  4. Spermatophyta
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Archegonia are multicellular organs found during the gametophytic phase of the plants and contains ovum. With a  long neck canal or venter and a swollen base these are either found on the surface of the plant or are embedded. However, in case of Angiosperms, there is no archegonia and the megagametophyte is reduced to just a few cells, one of which differentiates into the egg cell are contained in the ovule and enclosed in the megasporophyll or carpel.

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

Select the correct statement.

  1. Bryophyta are vascular non-flowering plants

  2. Algae are nonvascular phanerogams

  3. Gymnosperms are nonvascular seed bearing plants

  4. Angiosperms are vascular seed bearing plants

  5. Pteridophytes are vascular seed bearing plants
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Angiosperms are defined as vascular plants that produce seeds enclosed within a fruit (flowering plants).