Tag: botany

Questions Related to botany

Vexillum is found in

  1. Rosaceae

  2. Papilionaceae

  3. Cruciferae

  4. Solanaceae


Correct Option: B
Explanation:

Fabaceae or Papilionaceae is a large and economically important family of flowering plants. Vexillary aestivation is seen in members of Fabaceae. In vexillary aestivation, the outermost posterior petal is large which is known as the vexillum or standard, two lateral petals are known as the wings or alae, and the two anterior and innermost petals are united to form a boat-shaped structure known as the keel or carina. Hence, vexillum is found in Papilionaceae.

So, the correct answer is 'Papilionaceae'.

Which is correct arrangement of corolla in family papilionaceae?

  1. $C _{1+(2)+2}$

  2. $C _{1+2+(2)}$

  3. $C _{1+2+2}$

  4. None of the above


Correct Option: B
Explanation:

Fabaceae or Papilionaceae is a large and economically important family of flowering plants. It includes trees, annual or perennial herbaceous plants and shrubs. In Papilionaceae, the petals are 5 - outermost posterior petal is large which is known as the vexillum or standard, two lateral petals are known as the wings or alae, and the two anterior and innermost petals are united to form a boat-shaped structure known as the keel or carina. Hence, the correct arrangement of the corolla is 1+2+(2).

So, the correct answer is 'B'.

The distinct features of fabaceae are

  1. Zygomorphic, diadelphous and monocarpellary

  2. Actinomorphic, monadelphous and monocarpellary

  3. Zygomorphic, monadelphous and pentacarpellary

  4. Zygomorphic, polyadephous and tricarpellary

  5. Zygomorphic, diadephous and bicarpellary


Correct Option: A
Explanation:

Fabaceae or Leguminosae is a large and economically important family of flowering plants. In Fabaceae, the flowers are zygomorphic (radial symmetry), bisexual. The stamens are 10, diadelphous (stamens united by their filaments so as to form two groups). The gynoecium is monocarpellary, syncarpous, superior ovary.

So, the correct answer is 'Zygomorphic, diadelphous and monocarpellary'.

Among the following which one is the richest source of protein

  1. Soybean (Glycine max)

  2. Wheat

  3. Rice

  4. Gram


Correct Option: A
Explanation:

Soybean is the richest in protein.  36-56% of the dried weight in soybean is protein in nature. Glycine and conglycine are the main proteins which make upto 80% of the total protein.

Gram belongs to the family

  1. Gramineae

  2. Papilionaceae

  3. Compositae

  4. Solanaceae


Correct Option: B
Explanation:

The family Papilionaceae is the largest of the three families of the order Leguminales. Eg: Gram.

Arachis hypogea exhibits

  1. Epicarpy

  2. Apocarpy

  3. Geocarpy

  4. Syncarpy


Correct Option: C
Explanation:

Members of the genus Arachis exhibit geocarpy. This is a rare form of plant reproduction which involves the plant to plant its own seeds. After fertilization, the flower stalk elongates and bends towards the ground. Geocarpic plants like peanuts increase the opportunity of their offspring to survive long enough to germinate and grow.

So the correct option is C.

The botanical name of sanjeevani is

  1. Selaginella gracilis

  2. Selaginella rupestris

  3. Selaginella biformis

  4. Selaginella bryopteris


Correct Option: D

Areca catechu and supari belongs to the family

  1. Poaceae

  2. Palmae

  3. Asteraceae

  4. Scitamineae


Correct Option: B
Explanation:

Areca catechu commonly called Arecanut. It belongs to palm tree species and family Arecaceae or Palmae. The fruit i.e nut of this is betel nut, commonly known as supari in India. 

So the correct option is B.

Scientific name of green gram is

  1. Vigna mungo

  2. Vigna radiata

  3. Phaseolus mungo

  4. Phaseolus sinensis


Correct Option: B
Explanation:

Green gram is called mung bean. Its scientific name is Vigna radiata.  It belongs to the 

Order: Fabales
Family : Fabaceae

The answer is B

Lathyrism is caused by

  1. Dal

  2. Moth dal

  3. Khesari dal

  4. Glycine


Correct Option: C
Explanation:

Lathyrism is a neurological disorder in humans. It is caused due to consumption of legume belonging to genus Lathyrus, particularly  Lathyrus sativus  or Khesari dal. The cause of the disease is due to neurotoxin ODAP ($\beta$ - oxalyl,L $\alpha$ - diaminopropionic acid) which is structural analogue of  neurotransmitter glutamate. Which results in paralysis of the lower limbs.

So, the correct answer is 'khesari dal'