Tag: biology

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

'Triphala' powder is prepared from.

  1. Terminalia belerica, T. Chebula and T. Tomentosa

  2. Terminalia belerica, T. Chebula and phyllanthus emblica

  3. Terminalia Chebula, Phyllanthus emblica and Diospyros melanoxylon

  4. Terminalia chebula, buchanania lanzan and emblica officinalis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Triphala is a traditional Ayurvedic herbal formulation consisting of three medicinal plants: Terminalia chebula (Haritaki), Terminalia belerica (Bibhitaki), and Phyllanthus emblica (Amalaki / Indian gooseberry).

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

Match List I with List II and select the correct answer.

List-I(Plants) List-II(Medicinal value)
a. Adhtoda vasica $1$. Antihelminthic
b. Artemisia maritima $2$. Ecpectorant
c. Digitalis purpurea $3$. Treatment for Heart Disease
d. Podophyllum emodi $4$. Purgative
  1. A-$2$, B-$1$, C-$3$, D-$4$
  2. A-$3$, B-$1$, C-$2$, D-$4$
  3. A-$2$, B-$4$, C-$3$, D-$1$
  4. A-$3$, B-$4$, C-$2$, D-$1$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The matching is: Adhatoda vasica (expectorant), Artemisia maritima (anthelmintic), Digitalis purpurea (cardiac drug), Podophyllum emodi (purgative). This gives the pattern A-2, B-1, C-3, D-4. Adhatoda contains vasicine used for respiratory ailments; Artemisia yields santonin for worms; Digitalis gives digoxin for heart conditions; Podophyllum yields podophyllotoxin with purgative and anticancer properties.

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'.