Tag: botany

Questions Related to botany

Find the incorrect statement.
(A) Nepenthus, Drosera and Dionea are the insectivorous plants.
(B) Cuscuta, Loranthus and santalum are root parasites.
(C) Rafflesia is a saprophytic angiosperm.
(D) Mangrove plants are seen in saline marshy lands. 

botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

  1. B and C

  2. A and D

  3. A and C

  4. B and D

Show answer
Correct Option: A
Explanation:

Rafflesia is a genus of parasitic flowering plants. It contains approximately 28 species, all found in southeastern Asia, in Indonesia, Malaysia, Thailand and the Philippines. It is not a saprophytic angiosperm. Cuscuta, Loranthus and santalum are stem parasites. Nepenthes, Drosera and Dionaea are the insectivorous plants. Mangrove plants are seen in saline marshy lands. 

So, the correct answer is option A.

A mutant micro-organism unable to synthesize a compound required for its growth, but able to grow if the compound is provided, is known as

botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

  1. Auxotroph

  2. Prototroph

  3. Autotroph

  4. None of these

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Correct Option: A
Explanation:
An auxotroph is a mutant microorganism that requires some nutrient that is not normally required by the organism (prototroph) from which the mutant was derived. 
A microorganism that has the ability to synthesize all of its amino acids, nucleic acids, vitamins, and other cellular constituents from inorganic nutrients is known as prototroph.  
Autotrophs are those organisms that are able to make energy-containing organic molecules from inorganic raw material by using basic energy sources such as sunlight. 
Thus, the correct answer is option A.

The enzyme commonly presents in insectivorous plants to fulfil the need of their specific habit

botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

  1. Trypsin

  2. Pepsin

  3. Pectinase

  4. Cellulase

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Correct Option: B
Explanation:

  • Trypsin is working as a digestive enzyme to break down proteins in the small intestine.
  • Some plants eat insects. Such plants are called insectivorous plants. They trap and digest insects. The insect is then digested by the enzyme pepsin secreted by the cells of the plants. Example -The protease secreted in the pitcher fluid is pepsin-like.
  • Pectinase is the enzyme that breaks down pectin and polysaccharides found in plant cell walls.
  • Cellulase is the enzyme that converts cellulose into glucose or a disaccharide.

So option B is correct.

Carnivorous plants feed on

botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

  1. Small worms and insects.

  2. Rats and mice.

  3. Birds.

  4. All animals including humans.

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Correct Option: A

A man eater plant is

botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

  1. Nepenthes

  2. Aldovanda

  3. Pinguicula

  4. None of the above

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Correct Option: A

A carnivorous plant similar to Utricularia in being rootless, aquatic, and resembling Venus Fly Trap in catching mechanism is

botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

  1. Aldrovanda

  2. Pinguicula

  3. Drosera

  4. Sarracenia

Show answer
Correct Option: A
Explanation:

Aldrovanda is an insectivorous plant as it feeds on insects. Aldrovanda vesiculosa, commonly known as the waterwheel plant, captures small aquatic invertebrates using traps similar to those of the Venus flytrap. The traps are arranged in whorls around a central, free-floating stem.

So, the correct answer is 'Aldrovanda'.

The pertinacious substance involved in saprophytic incompatibility and stored in the exile is derived from ____________.

botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

  1. Tapetum

  2. Microspore

  3. Anther locule

  4. Stigmatic papillae

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Correct Option: A

In the saprophyte of Bryales, archesporium originates from _________________.

botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

  1. Endothecium

  2. Endothelium

  3. Amphithecium

  4. Perithecium

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Correct Option: A

Which one of the following does NOT apply to saprophytic self-incompatibility systems?

botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

  1. $3$-celled pollen

  2. Dry stigma

  3. Rejection reaction in the style

  4. In vitro pollen germination is difficult

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Correct Option: A

Which symbiotic relationship is NOT observed between Rhodium species and plants modulated?

botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

  1. R. Meliloti: Trigonella foenumgracum

  2. R. Leguminosarum: Lens esculenta

  3. R. Japonicum: Glycine max

  4. R. Lupini: Cajanus cajan

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Correct Option: A