Tag: botany

Questions Related to botany

Corolla is papilionaceous in

  1. Fabaceae

  2. Asteraceae

  3. Poaceae

  4. Solanaceae


Correct Option: A
Explanation:

Corolla is the second axillary whorl composed of petals. Like calyx, corolla also protects essential stamens and carpels within. Papilionaceous corolla has five free petals resembling a butterfly. The posterior superior petal is larger than the others (vexillum or standard), two anterior inferior petals which are usually more or less united forming a boat-shaped structure (carina or keel), two lateral petals called wings which overlap the carina and are themselves overlapped with the vexillum. This is a characteristic of subfamily Papilionaceae (eg: pea flower) belonging to family Fabaceae.

So, the correct answer is 'Fabaceae'.

Stem cuttings are commonly used for propagation in 

  1. Rubber

  2. Mangoes

  3. Sugarcane

  4. Jasmine


Correct Option: C
Explanation:

Vegetative reproduction is a type of asexual reproduction in which new plants are formed from the vegetative parts like, tubers, runners, suckers, rhizomes etc. Some of the plants can be propagated by the means of cutting. The part which is cut is allowed to grow into a new plant. Stem cutting which can be referred as the cane cuttings are used in the case of sugarcane. 

So, the correct answer is option C.

Commercial lac is produced from .............

  1. The nest of a type of bird

  2. The exudation of a type of insect.

  3. The scale of a type of a fish

  4. The root of a plant


Correct Option: B

Who was the major proponent of the endosymbiotic hypothesis?

  1. Matthias Schleiden

  2. Theodore Schwann

  3. Rudolf Virchow

  4. Lynn Margulis


Correct Option: D

Which organelle would not have originated by endosymbiosis?

  1. Lysosomes

  2. Chloroplast

  3. Flagella

  4. Mitochondria


Correct Option: A,C