Tag: know the plant world closely

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Questions Related to know the plant world closely

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

Which of the following is true about Saprophytes?

  1. They trap insects to meet their nitrogen requirement.

  2. They live on decaying organic matter.

  3. They share their food and shelter.

  4. Saprophytes contain chlorophyll.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
A saprophyte or saprotroph is an organism which gets its energy from dead and decaying organic matter. This may be decaying pieces of plants or animals. This means that saprophytes are heterotrophs. They are consumers in the food chain. This is the typical life-style of fungi.

So, the correct answer is 'They live on decaying organic matter.'.
Multiple choice botany know the plant world closely nutrition and its types types of nutrition in plants different modes of nutrition in plants

Saprophytes are likely to grow on 

  1. Bread pieces

  2. Pickles when kept in moist places

  3. On the ground after rains

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

Saprophytes are organisms that can't make their own food. In order to survive, they feed on dead and decaying matter. Fungi and a few species of bacteria are saprophytes. They grow tubular structures, or hyphae, which are filaments that grow and branch into the dead matter, produce digestive enzymes and digest away the dead organism. In order for a saprotrophic organism to facilitate optimal growth and repair, favourable conditions and nutrients must be present.[4] Optimal conditions refer to several conditions which optimize the growth of saprotrophic organisms, such as;

  • Presence of water: 80–90% of the fungi is composed of water by mass, and requires excess water for absorption due to the evaporation of internally retent water.
  • In terms of nitrogen-rich sources, saprotrophs require combined protein for the creation of proteins, which is facilitated by the absorption of amino acids, and usually taken from the rich soil.
  •  Fungi, bread mould, some protists, and many bacteria are saprophytic in nutrition.

So, the correct answer is 'All of the above'.

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

Biological significance of selfincompatibility in plant kingdom it to ________________.

  1. Promote vegetative growth

  2. Increase biomass

  3. Promote out breeding

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

Self-incompatibility is a genetic mechanism in plants that prevents self-pollen from germinating or fertilizing the ovule, thereby preventing inbreeding. Its primary biological significance is to promote outbreeding and maintain genetic diversity.

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

Albugo resembles Vaucheria in _________________.

  1. Mode of its nutrition

  2. Reserve food material

  3. Coenocytes thallus and development of sec organs

  4. Cell wall composition and similarity of sex organs
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Albugo (a parasitic oomycete) and Vaucheria (a xanthophyte alga) both share a coenocytic (multinucleate without cross-walls) thallus structure and similar modes of sexual organ development and fertilization ( oogamous reproduction involving an oogonium and an antheridium).

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

Which one of the following is a total parasite ?

  1. Nepenthes

  2. Rhozobium

  3. Cuscuta

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

A.Nepenthes - It is an insectivorous plant.

B.Rhizobium - Rod shaped, aerobic, Nitrogen fixing bacterium.
C.Cuscuta - complete stem parasite.
D.Lichens - Special type of plants formed by the association of algae and fungi.
So, the correct option is 'Cuscuta'

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

Which organism transforms complex organic compounds back into simple inorganic compound?

  1. Saprotrophs

  2. Consumers

  3. Producers

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

Saprotrophs, such as bacteria and fungi, are decomposers that break down organic matter from dead organisms into simpler inorganic substances. This process recycles nutrients back into the ecosystem.

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

Indian pipe plant are example of ______

  1. Autotrophic plant.

  2. Angiosperm

  3. Saprophyte

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

Saprophytes are the class of organism that have saprophytic mode of nutrition. They feed on dead living organism. Indian pipe plant :- it is not a fungus, it just looks like one. It is actually a flowering plant, and it is a member of the blueberry family.