Tag: diversity in plants

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

A small rootless aquatic herb in which a portion of leaf forms a tiny sack or bladder which traps water insects is

  1. Dionaea

  2. Utricularia

  3. Sarracenia

  4. Drosera
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Utricularia are carnivorous plants which capture small prey with remarkable suction traps. These are rootless plants formed of very thin, forked leaves. Only the flower remain out of the water while the whole trap is underwater. When an aquatic animal touches its sensitive hairs, the traps suck it in, in just a few seconds, along with water, which is then drained through its walls.

So, the correct answer is " Urtticularia ".

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

Plants which synthesize their food themselves are called saprotrophs.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plants which synthesise their food themselves are called autotrophs. That is, it doesn't depend on other organisms for food, using sunlight and water the plants makes their own food. They are considered as the producers in a food chain. Saprotrophs are the plants which feeds from the dead and decayed organic matters knows as detritius. Major saprotroph group includes fungi, bacteria and water molds.

So, the correct answer is option B.

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

Bt toxin gene has been cloned from the bacteria and expressed in plants to provide resistance to insects without the need for insecticides. Examples of such plants are

  1. Cotton and corn

  2. Rice and potato

  3. Tomato and soybean

  4. All of these.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bt toxin gene has been closed from the bacteria and expressed in plants to provide resistance to insects without the need for insecticides. Examples are Bt cotton, Bt corn, rice, tomato, potato and soybean, etc.

Multiple choice botany diversity in living things and their classification diversity in plants types of nutrition in plants different modes of nutrition in plants

Why vivipary is an undesirable character for annual crop plants?

  1. It reduces is vigour of the plant

  2. It adversely affects the fertility of the plant

  3. The seeds exhibit long dormancy

  4. The seeds cannot be stored under normal conditions for next season
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vivipary is a condition where seeds germinate on the plant. Most of the food crops are annuals and seeds are consumed as food. Therefore, if seeds germinate on the plant they cannot be utilized as food nor can they be stored for the next season. So, the correct answer is 'The seeds cannot be stored under normal conditions for next season'

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

A space parasite is?

  1. Vanda

  2. Cuscuta

  3. Rafflesia

  4. Utricularia
Reveal answer Fill a bubble to check yourself
A Correct answer
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'. 
Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Partially heterotrophic members of kingdom plantae are

  1. Insectivorous plants

  2. All algae

  3. most bryophytes

  4. most pteridophytes
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.

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

Facultative saprophyte is?

  1. A parasite which can live as a saprophyte

  2. Always a parasite

  3. Always a saprophyte

  4. May acquire parasite mode of life
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A facultative saprophyte is an organism that is primarily a parasite but has the ability to survive as a saprophyte (feeding on dead organic matter) under certain conditions.