Nutrition In Plants

Question 1

Define nutrition

Answer 1

Nutrition is the process of acquiring raw materials and energy from the environment for the metabolic activities of organisms.

Question 2

Define autotrophic nutrition

Answer 2

Autotrophs synthesize organic materials from CO2 and inorganic materials.

Question 3

What type of autotrophs are plants

Answer 3

Plants are photoautotrophs which utilizes light energy in order to synthesize organic molecules from inorganic material.

Question 4

Define symbiosis

Answer 4

Symbiosis is an ecological relationship in which two species live in close contact with each other

Question 5

State 3 types of symbiotic relationships

Answer 5

mutualism, parasitism, and commensalism

Question 6

Define mutualism

Give examples

Answer 6

A symbiotic relationship in which both participants are benefited.

e.g:legume root nodules with nitrogen fixing bacteria (Rhizobium)
mycorrhizae- symbiotic association of roots of higher plants with fungi corolloid root of Cycas with Anabaena

Question 7

Define commensalism give examples

Answer 7

It is an interaction between two species in which benefits one of the species and neither harm nor benefits the other.
e.g: epiphytic orchids

Question 8

Define parasitism give examples

Answer 8

It is a close association between two different species which is beneficial to one (the parasite) and harmful to the other (the host).
e.g. semi parasitic–Loranthus and host plant parasitic - Cuscuta (Dodder plant) and host plants

Question 9

State some carnivorous plants

Answer 9

e.g : Nepenthes, Drosera , Utricularia

Question 10

State the reason why some photosynthetic plants capture insects

Answer 10

These plants are photosynthetic but obtain nitrogen and minerals by killing and digesting insects and other small animals.
They live in habitats where the soil is poor in nitrogen and other minerals.
Therefore to fulfill their N requirements they capture insects