Tag: botany

Questions Related to botany

A space parasite is?

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

  1. Vanda

  2. Cuscuta

  3. Rafflesia

  4. Utricularia

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Correct Option: A
Explanation:
Space parasite is a plant parasite which depends on other plants for space for growth but not for water and nutrients. Vanda obtains water from the moisture in the air and prepares its own food through photosynthesis. It stays on other plants for obtaining sunlight. AS it grows on other trees, it is a space parasite.
The correct answer is 'Vanda'. 

A flower with carpels, stamens, petals is said to be?

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

  1. Complete

  2. Perfect

  3. Monoecious

  4. Unisexual

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Correct Option: B
Explanation:

A bisexual flower (or “perfect”) has both stamens and carpels, and a unisexual flower (or “imperfect”) lacks stamens is called staminate.

So, the correct option is 'Perfect'.

Partially heterotrophic members of kingdom plantae are

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

  1. Insectivorous plants

  2. All algae

  3. most bryophytes

  4. most pteridophytes

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Correct Option: A
Explanation:

(A) Insectivorous plants are the plants that feed on insects.

(B) Algae are photosynthetic eukaryotic plants.
(C) Bryophytes are small, non-vascular plants, such as mosses, liverworts, and hornworts.
(D) Pteridophyte is the vascular plant that disperses spore.
So, the correct option is 'Insectivorous plant'.

Facultative saprophyte is?

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

  1. A parasite which can live as a saprophyte

  2. Always a parasite

  3. Always a saprophyte

  4. May acquire parasite mode of life

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Correct Option: A

A partial root parasite of?

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

  1. Balanophora

  2. Rafflesia

  3. Santalum

  4. Dipterocarpus

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Correct Option: A

Consider the following plants:
Cycas, Funaria, Adiantum, Ginkgo, Marchantia, Salvinia.
Which of the following is common among them?

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

  1. They all possess archegoniophores

  2. They all have xylem and phloem

  3. They all have motile male gametes

  4. They all are heterosporous

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Correct Option: A

Heterotrophic and absorptive mode of nutrition is found in

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

  1. Algae

  2. Fungi

  3. Bryophytes

  4. Euglenoides

Show answer
Correct Option: B
Explanation:
Heterotrophic nutrition is achieve by digesting organic compounds. There are three main types of heterotrophic nutrition.
Holozoic nutrition: Complex food is taken into a digestive system and broken down into small pieces to be absorbed. This process consists of 5 stages, ingestion, digestion, absorption, assimilation and egestion.
Saprotrophic: Organisms feed on dead organic remains of other organisms.
Parasitism: Organisms getting food from other living organisms (the host), with the host receiving some kind of illness from the parasite. As Fungi shows all the three patterns of nutrition they are perfect example of heterotrophic nutrition.
Therefore, the correct answer is option B.

Epiphytes like orchids absorb water with the help of roots that are

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

  1. Aerial

  2. Underground

  3. Fibrous 

  4. Both A and B

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Correct Option: A
Explanation:

  • An epiphyte is an organism that grows on the surface of a plant and derives its moisture and nutrients from the air, rain, water or from debris accumulating around it.
  • Most epiphytic orchids are found growing in tropical areas below the canopy of trees. Epiphytic orchids have adapted to obtain water and nutrients that grow with their roots which are located aerially.
  • They have thick, spongy roots that absorb and store water and nutrients from the sporadic rainfall to be used over time.
So, the correct answer is 'Aerial'.

Which of the following feed upon dead plant and animal tissues?

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

  1. Spirogyra

  2. Mushroom

  3. Chlamydomonas

  4. Chlorella

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Correct Option: B
Explanation:
Spirogyra contains chlorophyll and obtains nutrition through the process of photosynthesis.
Chlamydomonas in the similar way, has photosynthetic mode of nutrition and it makes its own food by the process of photosynthesis.
Mushrooms are included in Kingdom fungi. They have no chlorophyll of their own. So they cannot perform the process of photosynthesis. As a result, they possess saprophytic mode of nutrition. this means that they derive nutrition from decaying dead plants and animals. They convert the complex organic substances in their body to simple inorganic substances and thus obtain the necessary nutrition.
So, option B "Mushroom' is the correct answer.

Which of the following part is modified into pitcher in pitcher plant?

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

  1. Leaf

  2. Stem

  3. Nodes

  4. Roots

Show answer
Correct Option: A
Explanation:

  • Pitcher plants are several different carnivorous plants which have modified leaves (act as a pitcher) which are known as pitfall traps—a prey-trapping mechanism featuring a deep cavity filled with digestive liquid. 
  • These plants trap harmful insects and kill them with the help of digestive fluid.
So, the correct answer is 'Leaf'.