Tag: nutrition and its types

Questions Related to nutrition and its types

Which of the following groups contains uricotelic animals only ?

  1. Reptiles, birds, land snails, insects

  2. Reptiles, birds, land snails, aquatic insects

  3. Amphibians, birds, land snails, insects

  4. Amphibians, reptiles, birds, insects


Correct Option: A
Explanation:

Reptiles, birds land snails and insects excrete nitrogenous wastes as uric acid in the form of white paste and thus they are called uricotelic animals. 

So, the correct answer is (A).

Amarbel is an example of

  1. Autotroph

  2. Parasite

  3. Saprotroph

  4. Host


Correct Option: B
Explanation:

Amarbel is an example of the parasite. Cuscuta reflexa is the botanical name for the amarbel. It is also known as giant dodder. It grows in a creative manner over host plants and this species has the capability of producing numerous branches within a short period of time. Since it is a parasitic plant, so it depends on host plants for food. Over haustoria, amarbel provide communication with its host plants. Amarbel is widely used in the treatment for a headache, labour pain, bone fracture, fever and rheumatism. 

So, the correct answer is option B.

Organisms which obtain their food from non-living material environment are called

  1. Autotrophs

  2. Epiphytes

  3. Parasites

  4. Saprophytes


Correct Option: D

Balanophora$/$ Orobanche is a

  1. Total root parasite

  2. Partial root parasite

  3. Partial stem parasite

  4. Total stem parasite


Correct Option: A
Explanation:

Balanophora is a total root parasite because it sucks nutrients and water from the roots of host plants like cabbage etc for its survival. In turn, it causes harm to the host.

Thus the correct answer is 'Total root parasite'.

The smallest angiospermic$/$ dicot parasite is?

  1. Arceuthobium

  2. Wolffia

  3. Cassytha

  4. Rafflesia


Correct Option: A
Explanation:

A. Arceuthobium also called dwarf mistletoe, is a parasitic plant growing on pine etc. Its length is about 5mm-8mm. It is the smallest parasitic angiosperm known till date.

B. Wolffia is the smallest angiosperm about 2mm but it is not a parasite.
C. Cassytha is a parasitic climber about 2-5m in size.
D. Rafflesia is a total root parasite with the largest flower.
So, the correct answer is 'Arceuthobium'.

A partial parasite is the one which

  1. Absorbs water and mineral salts from host

  2. Absorbs only water from host

  3. Takes food from host only occasionally

  4. Lives on the host for space only


Correct Option: A
Explanation:

A plant which depends on its host for only water and nutrients, but not sugars is a partial parasite. They do not depend on the host for food as they are usually chlorophyllous, so they are able to photosynthesize. 

So, the correct option is 'Absorbs water and mineral salts from host'.

A rootless aquatic in which a portion of leaf is modified to form a bladder for catching small aquatic animals is?

  1. Dionaea

  2. Drosera

  3. Utricularia

  4. Nepenthes


Correct Option: C
Explanation:

Utricularia is also called as bladderwort because a part of the leaf is modified into a bladder like structure for catching small animals. It is a total root parasite because it is rootless and cannot prepare its own food.

Thus, the correct option is 'Utricularia'.

Santalum album$/$ Sandal-wood Tree is?

  1. Partial root parasite

  2. Partial stem parasite

  3. Total stem parasite

  4. Total root parasite


Correct Option: A
Explanation:
Santalum album is a partial root parasite, because it can photosynthesize its own food, but taps the roots of other species for water and inorganic nutrients.
Thus, the correct option is 'Partial root parasite'.

Botanical name of Venus Fly Trap is?

  1. Aldrovanda

  2. Dionaea

  3. Utricularia

  4. Nepenthes


Correct Option: B
Explanation:

A. Aldrovanda is the botanical name of the water wheel plant.

B. Dionaea is the botanical name of venus fly trap. In this plant, the leaves are modified into flaps which shut on irritated by the insect.
C. Utricularia is the botanical name of bladderwort.
D. Nepenthes is the botanical name for pitcher plant.
So, the correct answer is 'Dionaea'.

Biggest flower belongs to a plant which is?

  1. Partial stem parasite

  2. Partial root parasite

  3. Total stem parasite

  4. Total root parasite


Correct Option: D
Explanation:

The biggest flower belongs to a plant called rafflesia arnoldii, which is a total root parasite because it cannot prepare its own food, thus takes food along with water and minerals from the roots of the host plant.

The correct option is 'Total root parasite'.