Biology · Science General

Botany and Plant Science

4,989 Questions

Botany and plant science delve into the biological study of plant life, covering structural anatomy, physiological processes, and reproductive mechanisms. Key topics include inflorescence patterns, root modifications, and seed development, which are vital for biology sections in medical entrance exams. This collection of practice questions helps solidify understanding of complex plant functions.

Plant ReproductionPlant AnatomyRoot ModificationsInflorescence PatternsPlant Morphology

Botany and Plant Science Questions

Multiple choice

The reproductive part of flower contains

  1. androecium + corolla + calyx

  2. androecium + gynoecium + corolla + calyx

  3. corolla + calyx + gynoecium

  4. androecium + gynoecium
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Androecium and gynoecium constitute the reproductive parts of a flower. Androecium is the male reproductive part and gynoecium is the female reproductive part.

Multiple choice

Which two plants reproduce by the means of spore?

  1. Rose and lotus

  2. Moss and ferns

  3. Mint and cacti

  4. Bryon phylum and dahlia
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The spores are the means of reproduction in many fungi like mosses and ferns. The growth of fungus can also be observed on moist bread surface kept undisturbed for some time.

Multiple choice

In angiosperms, there is double fertilization, which means fusion of _____.

  1. egg nucleus with two male nuclei

  2. two egg nuclei by two male nuclei

  3. two egg nuclei by a single male nucleus

  4. one male nucleus with egg nucleus and other male nucleus with polar nuclei
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Double fertilization means fusion of one male nucleus with egg nucleus and other male nucleus with polar nuclei. 

Multiple choice

In angiosperms, embryosac is developed from

  1. megaspore mother cell

  2. secondary nucleus

  3. endothecium

  4. microspore mother cell
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Megaspore mother cell undergoes meiosis. On the basis of participation of megaspore nuclei, the development of embryosac may be monosporic, bisporic of tetrasporic.

Multiple choice

Which of the following sentences about chlamydomonas is untrue?

  1. Chlamydomonas is generally found in habitats rich in ammonium salt.

  2. Sexual reproduction is absent in chlamydomonas.

  3. Chlamydomonas possesses red eye spots for photosensitivity.

  4. Cell wall is made up of glycoprotein and non-cellulosic polysaccharides.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It is untrue. Chlamydomonas reproduces both by sexual and asexual reproduction.

Multiple choice

Clavibacter michiganensis subsp. sepedonicus causes ring rot in potatoes. It resides in which of the following during the first stage of invasion?

  1. Plant leaves

  2. Xylem vessels

  3. Phloem vessels

  4. Parenchymatous tissue
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In the first stages of invasion, Clavibacter michiganensis resides as a biotrophic pathogen in the xylem vessels. They multiply by binary fission inside the vessel and establish colony there. If colonisation is successful, they may plug the xylem vessels.