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12th Standard English Medium Biology (Botany) Subject Principles of Ecology Creative 2 Mark Questions with Solution Part - II

Published on: 22/06/2021

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Std: 12th Standard - Biology

chapter: - Creative Questions

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Questions:

Generic 2

5 x 2 = 10

Write a brief note on pneumatophores. Give an example.

Specify the type of interactions between the given pair of species.
(a) Spanish moss and Oak tree
(b) Cuscuta and Acacia
(c) Nepenthes and Ants
(d) Alga and fungus

Given below are few types of plants. Mention their habitats.
(a) Halophytes
(b) Chasmophytes
(c) Cryophytes
(d) Psammophytes.

Pyronema confluens is the indicator of fire - comment.

Sequentially arrange the different units of ecological hierarchy.

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Answers Key:

Generic 2

5 x 2 = 10

Pneumatophores are the special type of negatively geotropic roots developed by halophytes. It possess pneumathodes to get sufficient aeration. They are also called breathing roots.
Example: Avicennia.

(a) Commensalism
(b) Parasitism
(c) Predation
(d) Mutualism

(a) Halophytes: Plants living in saline soils.
(b) Chasmophytes: Plants living in rocky crevices.
(c) Cryophytes: Plants living in ice surface.
(d) Psammophytes: Plants living in sandy soils

Pyronema confluens is a fungus which grow on the soil of burnt or fire disturbed areas. Hence it is called as indicator of fire.