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

If pea is a biennial plant, what does that mean?

  1. Two varieties of a pea plant can be grown in a year.

  2. Pea plants can be planted only during two months of winter.

  3. Pea plants are grown after every two years in the same field.

  4. The biological life cycle of a pea plant completes in 2 years.

  5. Two species of a pea plant can be grown simultaneously.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Yes, it is correct. A biennial plant is a plant that takes two years to complete its biological lifecycle.

Multiple choice

Nature of Aquifex species is:

  1. thermophilic

  2. halophilic & autolithotrophic

  3. chemolithoautotrophic

  4. both 1 & 3

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

Aquifex species is thermophilic as well as chemolithoautotroph that captures energy by oxidizing the hydrogen, sulfur, thiosulfate with oxygen as the terminal electron acceptor. Original bacterial ancestor is thermophilic & chemolithoautotrophic.

Multiple choice

Which of the following lichens is a bryophyte?

According to the functional group, lichens can be off different types such as cyanolichen, forage lichen, matrix lichen, Bryophytes.

  1. Usnea longissima

  2. Parmelia

  3. Nephroma occultum

  4. Kindbergia oregana

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

Kindbergia oregano is a bryophyte, which is not suitable for eating by maximum animals acts as hydrologic buffer by absorption  and causes precipitation by evaporation. It also includes accumulation of nutrients and their release.

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.