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

Opium or morphine is obtained from the latex of unripe fruit of

  1. Papaver somniferum

  2. Coffea arabica

  3. Thea sinensis

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

Poppy is a flowering plant belongs to the family Papaveraceae. Opium and morphine are obtained from the latex of unripe fruit of Papaver somniferum.

Coffer arabica is a type of coffee that is produced from Coffee Arabica plant. Thea Sinensis is a tea plant that belongs to Theaceae family. Oryza sativa is rice that belongs to the grass family.
Hence option A is correct.

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

Strychnine which is of medicinal importance is essentially ____________.

  1. An antibiotic

  2. Antimalarial drug

  3. An alkaloid from Strychnos nuxvomica

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

 The dried ripe seeds are the source of a drug nux vomica (Strychnos) which is used as a tonic, stimulant and in the treatment of paralysis and nervous disorders.

So, the correct answer is 'An alkaloid from Strychnos nux vomica'

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 the botanical name of oil palm?

  1. Elaeis guineensis

  2. Olea europeaea

  3. Cocas nucifera

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

Elaeis guineensis is the correct botanical name for the African oil palm. Olea europaea is olive, Cocos nucifera is coconut, and Carthamus tinctorius (not 'tintorius') is safflower. Oil palm is a major source of vegetable oil globally.

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

Narcotic and soothing properties of tobacco is due to or Harmful alkaloid contained in the leaves of tobacco is ___________.

  1. Caffeine

  2. Aconite

  3. Nicotine

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

 Nicotine is a harmful alkaloid of tobacco and the pharmacological activity of tobacco is almost entirely  due to its content nicotine which is consumed in various forms, is absorbed through the lining of the lungs,gut etc it acts upon the nervous system, may cause paralysis, cyanosis etc. It is an irritant and therefore may lead to oral and lung cancer.

So, the correct answer is 'Nicotine'

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

Antimalarial drug quinine is obtained from

  1. Bark of Cinchona

  2. Root of Cycas

  3. Stem of Mango

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Quinine is the drug obtained from the bark of Cinchona tree primarily used for the treatment of malaria that is a disease caused by parasite protozoan Plasmodium.

So the correct option is 'Bark of Cinchona'

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

Plants like Aegle marmelos, Ocimum sanctum and Ficus religiosa are designated as

  1. Sacred plants

  2. Traditional food crops

  3. Lesser known food plants

  4. Medicinal plant species
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Some plants are used for sacred and ceremonial purposes and are known as sacred plants. For example, Prosopis cineraria' known as Jammi, Shami, Khejri Tree, or Ghaf, is a species of flowering tree belonging to the pea family, Fabaceae is a sacred plant. The importance lies during the tenth day of the Dasara Festival when it is worshipped in various parts of India. Other examples include Aegle marmelos, Ocimum sanctum, and Ficus religiosa.

So, the correct answer is 'Sacred plants'.

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

Of the following plants, which one would you consider an endangered plant due to overexploitation?

  1. Dioscorea

  2. Maize

  3. Wheat

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

Dioscorea is considered an endangered plant due to overexploitation.  This is a medicinal plant from the Himalayan region and it produces bulbil and rhizome and it is rich in streodial compound . 

Maize, Wheat, and rice are not used for medicinal purposes.
Hence, Option A is correct.

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 pairs is NOT correctly matched?

  1. Neem - Azadirachtin

  2. PEG- Protoplast fusion

  3. Gybogenesis- Haploids
  4. Wheat- $2$-celled pollen
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Wheat pollen is typically shed at a 3-celled stage, not a 2-celled stage, making option D incorrectly matched. The other pairs correctly associate neem with azadirachtin, PEG with protoplast fusion, and gynogenesis with haploids.

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

Allelopathic effect of excretion of one plant species on another associated plant species is related to.

  1. Healing of wounds

  2. Inhibition of growth

  3. Promotion of closer association

  4. Prevention of attack by pathogenic microbes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Allelopathy refers to the chemical inhibition of one plant (or other organism) by another through the release of biochemicals into the environment. Hence, it is directly related to the inhibition of growth.

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

Many herbs of medicinal value can be obtained on a commercial scale by __________________.

  1. Developing a quick rooting and multiplying medium for vegetative buds

  2. Long-term hybridization process for increasing fertility of seeds

  3. Physiological research for finding the cause of non-viability of seeds

  4. Using the hormone dipping system for cutting
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Commercial scale production of medicinal herbs often relies on vegetative propagation techniques, such as developing efficient rooting and multiplication media for buds, to ensure genetic uniformity and rapid growth.