Biology

Plant Biology and Classification

1,473 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

A lichen shows a mutualistic symbiosis between green algae and ______________ .

  1. chytrid

  2. archeabacterium

  3. ascomycete

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

Lichens are composite organisms consisting of a symbiotic relationship between a photosynthetic partner (green algae or cyanobacteria) and a fungal partner. The fungal component is almost always an ascomycete fungus, which provides structure and protection while receiving nutrients from the algae. This mutualistic relationship allows lichens to survive in harsh environments where neither organism could thrive alone.

Multiple choice

Which of the following belong to the same class of algae?

  1. Chara, Fucus and Polysiphonia

  2. Volvox, Chlamydomonas and Spirogyra

  3. Porphyra, Ectocarpus and Ulothrix

  4. Sargassum, Laminaria and Gracilaria

  5. Dictyota, Ectocarpus and Gelidium
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

All of them belong to the same class, i.e. green algae.

Multiple choice

Why are bryophytes called amphibians of the plant kingdom?

  1. They have structures similar to amphibians.

  2. They require a layer of water for carrying out sexual reproduction.

  3. They occur in damp places.

  4. They are mostly aquatic.

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

Bryophytes are called the amphibians because they require a layer of water for carrying out sexual reproduction. They grow in the moist places on land but they require water during the time of fertilization, i.e.,  for completion of life cycle.