TN State Board Samacheer Kalvi Online Test for 12th Std - Bio Botany - English - Principles of Ecology

Question 1 Of 10

Sticky glands of Boerhaavia and Cleome support

Anemochory Zoochory Autochory Hydrochory

Question 2 Of 10

Read the given statements and select the correct option.

i, ii and iii only ii, iii and iv only i, ii and iv only ii and iii only

Question 3 Of 10

Pedogenesis refers to

Fossils Water Population Soil

Question 4 Of 10

Mycorrhiza promotes plant growth by

Serving as a plant growth regulators Absorbing inorganic ions from soil Helping the plant in utilizing atmospheric nitrogen Protecting the plant from infection

Question 5 Of 10

Which of the given plant produces cardiac glycosides?

Calotropis Nepenthes Acacia Utricularia

Question 6 Of 10

A free living nitrogen fixing cyanobacterium which can also form symbiotic association with the water fern Azolla

Nostoc Anabaena chlorella Rhizobium

Question 7 Of 10

A specific place in an ecosystem, where an organism lives and performs its functions is

habitat niche landscape biome

Question 8 Of 10

Ophrys an orchid resembling the female of an insect so as to able to get pollinated is due to phenomenon of

Myrmecophily Ecological equivalents Mimicry None of these

Question 9 Of 10

Which of the following plant has a non-succulent xerophytic and thick leathery leaves with waxy coating

Bryophyllum Ruscus Nerium Calotropis

Question 10 Of 10

Arrange the correct sequence of ecological hierarchy starting from lower to higher level.

Individual organism → Population Landscape → Ecosystem Landscape → Ecosystem → Biome → Biosphere Community → Ecosystem → Landscape → Biome Community → Ecosystem → Landscape → Biome

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 12th Standard Bio Botany - English Medium - Principles of Ecology

Samacheer Kalvi 12th Bio Botany - Principles of Ecology - Book Back Questions in English Medium