Tag: know the plant world closely

Questions Related to know the plant world closely

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

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

  1. Dionaea

  2. Utricularia

  3. Sarracenia

  4. Drosera

Show answer
Correct Option: B
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 ".

Plants which synthesize their food themselves are called saprotrophs.

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

  1. True

  2. False

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Correct Option: B
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.

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

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

  1. Cotton and corn

  2. Rice and potato

  3. Tomato and soybean

  4. All of these.

Show answer
Correct Option: D
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.

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

Show answer
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

Show answer
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

Show answer
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

Show answer
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

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

  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.