Tag: types of nutrition in plants

Questions Related to types of nutrition in plants

We can demarcate a facultative parasite as one which

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

  1. Inevitably requires living host.

  2. Only requires dead organic matter to live.

  3. Is actually a parasite but can also become saprophyte.

  4. Is actually a saprophyte but can also become a parasite.

Show answer
Correct Option: D
Explanation:

Facultative parasites are organisms which do not completely depend on a host for completing its life cycle, but may become parasitic in absence of food or other favorable conditions

Example: Armillaria species
So, the correct answer is 'Is actually a saprophyte but can also become a parasite'

Cuscuta is

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

  1. Total root parasites

  2. Total stem parasites

  3. Partial stem parasites

  4. Epiphytes

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Correct Option: B
Explanation:

Cuscuta (Doddar) plant is obligate or total stem parasite. It completely lacks chlorophyll and has no connection with the soil after the seeding stage. Therefore it is totally dependent on the host for organic food materials and supply of water and minerals salts.

______________ is a parasitic plant.

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

  1. Mushroom

  2. Mucor

  3. Cuscuta

  4. Yeast

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Correct Option: C

Animals living and subsisting on other animals are studied under

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

  1. Pathology

  2. Parasitology

  3. Parazoology

  4. Protozoology

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Correct Option: B
Explanation:

a) Pathology deals with the study of the nature and causes of diseases. 

b) Parasitology deals with the study of parasitic organism.
c) Parazoology deals with the study of animals known as parazoa.
d) Protozoology deals with the study of protozoa.
So, the correct answer is 'Parasitology'.

A fungus which grows on a host but can also subsist on organic matter is

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

  1. Obligate parasite

  2. Obligate saprophyte

  3. Facultative saprophyte

  4. Facultative parasite

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Correct Option: C

To digest the food that lies in external medium, a saprophyte secretes

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

  1. Enzymes

  2. Hormones

  3. Sugar

  4. None of the above

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Correct Option: A

The bacteria and fungi which feed on dead organic matter are called

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

  1. Parasites

  2. Saprophytes

  3. Lithophytes

  4. Dimorphic

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Correct Option: B

Which one of the following is a partial root parasite?

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

  1. Balanophora

  2. Santalum

  3. Viscum

  4. Cuscuta

Show answer
Correct Option: B
Explanation:
Santalum album is a partial root parasite because it photosynthesizes its own food, but taps the roots of other species for water and inorganic nutrients. so it depends only partially on the host. It grows on the roots of Dalbergia, Eucalyptus, and Albizzia.
So, the correct option is 'Santalum'.

A partial parasite is?

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

  1. Cuscuta

  2. Cassytha

  3. Arceuthobium

  4. Viscum

Show answer
Correct Option: D
Explanation:

Viscum is a partial stem parasite among the following because it depends on its host for only water and minerals. It can prepare its own food through photosynthesis as it is chlorophyllous.

So the correct option is 'Viscum'.

Monotropa is a

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

  1. Saprophyte

  2. Symbiont

  3. Parasite

  4. Insectivorous plant

Show answer
Correct Option: A
Explanation:
Monotropa is a Saprophyte.

Monotropa uniflora (Indian pipe) is a small, low-lying wild flower. It lacks chlorophyll accounting for its translucent white colour. Because it cannot synthesise its own energy, this plant is saprophyte.