Tag: plant kingdom and the environment around us

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Questions Related to plant kingdom and the environment around us

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

Secondary metabolites of plant weed 'vinca rosea' which is used as anti-cancerous drugs in

  1. Vincristine

  2. Cyclophosphamide

  3. Vinblastin

  4. Both A and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vinca rosea is an ornamental plant. It produces secondary metabolites Vincristine. This vincristine is used as anti-cancerous drugs. Vinblastine is an alkaloid produced by the same plant. These both compounds are used in treatment of leukemias, lymphomas and childhood cancers,

Thus, the correct answer is 'Both A and C.'

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

Clove used as spice represents _________.

  1. Seed

  2. Leaves

  3. Flower buds

  4. Stem tip

  5. Terminal bud
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The spice of clove is obtained from flower buds of  Syzygium aromaticum, plant belonging to the family Myrtaceae. The unopened flower buds are plucked and air-dried to obtain the spice. The plant can continue to flower for up to 80 years. The clove has several therapeutical uses such as diabetes treatment, dental pain reliever preparation of toothpaste etc. other than the culinary uses.

Hence, the correct answer is 'Flower buds'

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

Aquatic plants are covered with mucilage which 
a. Make different part of plant spongy 
b. Protects them from pathogens and animals 
c. Functions as lubricant 

  1. a, b

  2. b, c

  3. a, c

  4. All
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Aquatic plans are covered with mucilage which protects them from epiphytes, pathogens and animals. It also functions as lubricants. 

Multiple choice biology plant kingdom and the environment around us some important plants uses of plants as medicine medicinal plants
Select the pair which contains a fodder and a medicinal plant. 

  1. Sesbania and Belladona

  2. Trifolium and Petunia

  3. Lupin and Colchicum

  4. Aloe and Trifolium

  5. Indigofera and Asparagus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Aloe is a cactus-like plant of Solanaceae family is a native of America. The gel obtained from its leaves is used in various medicines to treat skin related problems.

Trifolium is native of Europe and belongs to family Fabaceae is used in various medicines as anti-inflammatory and antidermatosis agent.
They also serve as fodder, especially for cattle.
So the correct option is 'Aloe and Trifolium'

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

The drugs-caffeine, tannin and nicotine are

  1. Alkaloids

  2. Cortisones

  3. Steroids

  4. Mild alkalis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. It is the world's most widely consumed psychoactive drug. Unlike many other psychoactive substances, it is legal and unregulated in nearly all parts of the world. There are several known mechanisms of action to explain the effects of caffeine. The most prominent is that it reversibly blocks the action of adenosine on its receptor and consequently prevents the onset of drowsiness induced by adenosine. Caffeine also stimulates certain portions of the autonomic nervous system. Caffeine is a bitter, white crystalline purine, a methylxanthine alkaloid, and is chemically related to the adenine and guanine bases of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
Tannins (or tannoids) are a class of astringent, polyphenolic biomolecules that bind to and precipitate proteins and various other organic compounds including amino acids and alkaloids. The term tannin refers to the use of oak and other bark in tanning animal hides into leather. The tannin compounds are widely distributed in many species of plants, where they play a role in protection from predation, and perhaps also as pesticides, and might help in regulating plant growth. The astringency from the tannins is what causes the dry and puckery feeling in the mouth following the consumption of unripened fruit, red wine or tea. Likewise, the destruction or modification of tannins with time plays an important role when determining harvesting times.
Nicotine is an anti herbivory alkaloid and potent parasympathomimetic stimulant found in plants, mostly those in the nightshade family. Nicotine acts as a receptor agonist at most nicotinic acetylcholine receptors (nAChRs), except at two nicotinic receptor subunits (nAChRα9 and nAChRα10) where it acts as a receptor antagonist. Nicotine is highly addictive. It is one of the most commonly abused drugs. 
So the correct option is 'alkaloids'.


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

Which one of the following is an antimalarial drug?

  1. Quinine

  2. Ephedrine

  3. Morphine

  4. Digoxin
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Quinine in as alkaloid derivative obtained from the bark of cinchona tree. It is used as an anti-malarial drug.

B. Ephedrine is obtained from Ephedra and is used as a sympathomimetic drug.
C. Morphine is obtained from Opium and is used as an analgesic, anaesthetic and sedative.
D. Digoxin is a cardiac glycoside.
Hence, the correct answer is 'Quinine'

Multiple choice oil, fibres, spices and medicine producing plants plant kingdom and the environment around us some important plants uses of plants as medicine

Which of the following is used in eye inflammation and for curing night blindness

  1. Atropa belladonna

  2. Cichorium intybus

  3. Eclipta alba

  4. Emilia sonchifolia

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

Emilia sonchifolia is a medicinal plant known for its use in treating eye inflammation and night blindness in traditional medicine.