Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology plant kingdom and the environment around us some important plants uses of plants as medicine medicinal plants

Colchicine is obtained from

  1. Bulb of Autumn Crocus

  2. Corm of Autumn Crocus

  3. Rhizome of Autumn Crocus

  4. Leaves of Autumn Crocus
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Colchicum autumnale, commonly known as Autumn crocus, meadow saffron is toxic autumn-blooming flowering plant belonging to family Colchicaceae. It is a perennial herb and native to Great Britain and Ireland. The bulb-like corms of Colchicum autumnale contain colchicine, a useful drug and it is also used in plant breeding. So, the correct answer is 'Corm of Autumn Crocus'.

Multiple choice biology plant kingdom and the environment around us some important plants uses of plants as medicine medicinal plants

Soluble fibre is useful medically for

  1. Optimum functioning of alimentary canal

  2. Reduction in blood cholesterol

  3. Binding of faecal matter

  4. Non-corrosion of intestinal lining
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Soluble fiber attaches to cholesterol and takes them out of the body from our system that helps in reducing blood cholesterol and also reducing the risk of heart disease. These are found in the food like oats, apples, nuts etc.

So, the correct option is 'Reduction in blood cholesterol'.

Multiple choice biology plant kingdom and the environment around us some important plants uses of plants as medicine medicinal plants

Part of Aloe which is medicinally important is

  1. Stem

  2. Root

  3. Flower

  4. Leaves
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Aloe vera is an evergreen perennial plant belonging to the family Asphodelaceae. It originates from Arabian Peninsula but grown wildly in tropical climates around the world. It is widely cultivated for agricultural and medicinal purposes. The leaves of Aloe are fleshy which are used for medicinal purposes in the treatment of skin.

So, the correct answer is 'Leaves'.

Multiple choice biology plant kingdom and the environment around us some important plants uses of plants as medicine medicinal plants

Dragon Plant is

  1. <p>Draceaena draco</p>

  2. <p>Xanthorrhoea australis</p>

  3. <p>Aloe dichotma</p>

  4. <p>Yucca arborescens</p>
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Dracaena draco, the Canary Island Dragon tree or Drago is a subtropical tree-like plant native to Canary Islands, Madeira and Cape Verde. It is a monocot and it belongs to family Asparagaceae. It is available as an ornamental tree in parks, gardens and drought tolerant water-conserving projects. So, the correct answer is 'Dracaena draco'.

Multiple choice biology plant kingdom and the environment around us some important plants uses of plants as medicine medicinal plants

(A) Reserpine (B) Ephedrine
(C) Ajmaline (D) Colchicine
Alkaloid pair which is completely unrelated with Rauwolfia is



  1. A, B

  2. B,C

  3. C,D

  4. B,D
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ephedrine is an alkaloid with a phenethylamine skeleton found in various plants in the genus Ephedra.

Colchicine is an alkaloid isolated from Colchicum autumnale.
So the correct option is D.

Multiple choice biology plant kingdom and the environment around us some important plants uses of plants as medicine medicinal plants

Leaf juice of plant which can kill lice is

  1. <p>Dracaena</p>

  2. <p>Gloriosa</p>

  3. <p>Colchicum</p>

  4. <p>Hyacinthus</p>
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Colchicum autumnale, commonly known as Autumn crocus, meadow saffron is a toxic autumn-blooming flowering plant belonging to family Colchicaceae. It is a perennial herb and native to Great Britain and Ireland. Colchicum plants are deadly poisonous due to colchicine content. The leaf juice of Colchicum autumnale can be used to kill lice. So, the correct answer is 'Colchicum'. 

Multiple choice biology plant kingdom and the environment around us some important plants uses of plants as medicine medicinal plants

Reserpine is an alkaloid obtained from _____________.

  1. Aswagandha

  2. Sarpgandha

  3. Opium

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

 Reserpine is an alkaloid obtained from roots of Rauwolfia serpentina (sarpgandha) family Apocynaceae. It is used in treatment of blood pressure,
snake bite and mental disorders.

So, the correct answer is 'Sarpgandha'

Multiple choice biology plant kingdom and the environment around us some important plants uses of plants as medicine medicinal plants

Assertion : Reserpine is hypertensive agent.

Reason : Reserpine is obtained from the dried roots of Rauwolfia serpentina.


  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Reserpine that is obtained from the dried roots of Rauwolfia serpentina has been used by Indians so long as a cure for epilepsy, high blood pressure, insanity, intestinal disorders, cardiac diseases, snake bite and as an antihelminthic. Reserpine is widely employed today for hypertension.

So the correct option is B.