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

The tallest plant belongs to

  1. pteridophytes

  2. monocots

  3. angiosperms

  4. gymnosperms

  5. dicots
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The tallest plant belongs to gymnosperms.

Multiple choice

Which of the following is/are function(s) of tapetum?

  1. Secretion of enzymes and hormones

  2. Transportation of nutrients

  3. Production of ubisch bodies

  4. Secretion of special type of protein for pollen to recognise compatibility

  5. All of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option.

Multiple choice

Which of the following plants is/are insect eater(s)?

  1. Pitcher plant

  2. Touch-me-not plant

  3. Venus fly trap

  4. Both 1 and 3

  5. Both 1 and 2
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Pitcher plant (Nepenthes) and Venus fly trap (Dionaea muscipula) are both carnivorous plants that trap and digest insects. The Touch-me-not plant (Mimosa pudica) responds to touch by folding its leaves but is not carnivorous - it's a movement response, not insect-eating behavior.

Multiple choice

Natural system of classification is based on

  1. phylogeny

  2. morphology

  3. heredity

  4. Both (1) and (2)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Natural system of classification is based on both phylogeny (evolutionary relationships) and morphology (physical characteristics and structure). Phylogeny shows evolutionary history and relationships, while morphology provides observable traits that help in classification. Modern taxonomy uses both - morphological features provide practical identification methods, while phylogenetic analysis reveals evolutionary relationships and common ancestry.

Multiple choice

Liverworts and mosses belong to the ______ kingdom.

  1. plantae

  2. animalia

  3. archaebacteria

  4. eubacteria

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

Liverworts and mosses belong to the Plantae kingdom. They are non-vascular plants (bryophytes) within the plant kingdom. They share plant characteristics like photosynthesis, cellulose cell walls, and alternation of generations, but lack true vascular tissue. They are definitely not animals (Animalia), archaea (Archaebacteria), or true bacteria (Eubacteria).

Multiple choice

Which of the following can be excluded from the main adaptations of non-vascular plants?

  1. They reproduce both asexually and sexually.

  2. The rate of evaporation is slow.

  3. The sporophyte grows as a parasite on the gametophyte.

  4. The non-vascular plant usually grows in dry places.

  5. These plants possess rhizoids.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Non-vascular plants usually grow in moist and shady places. The moist environment is essential for easy uptake of water as they lack the vascular tissues like xylem and phloem.

Multiple choice

Parietal placentation is found in

  1. tomato and lemon

  2. dianthus and primrose

  3. mustard and prgemone

  4. sunflower and marigold

  5. pea and china rose
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In parietal placentation, the ovules develop on the inner wall of the ovary.

Multiple choice

The plants that love to grow in salty environments are called

  1. Halophytes

  2. Mesophytes

  3. Xerophytes

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

Halophytes are plants adapted to grow in saline (salty) environments like salt marshes, mangroves, and coastal areas. They have specialized mechanisms to deal with high salt concentrations, such as salt glands or the ability to sequester salt in vacuoles. Mesophytes grow in moderate conditions, xerophytes in dry conditions, and aquaphytes in water.