TN State Board Samacheer Kalvi Online Test for 11th Std - Biology - English - Principles of Ecology

Question 1 Of 10

Pedogenesis refers to

Fossils Water Population Soil

Question 2 Of 10

Read the given statements and select the correct option.

Both statements A and B are incorrect. Statement A is correct but statement B is incorrect. Both statements A and B are correct but statement B is not the correct explanation of statement A. Both statements A and B are correct and statement B is the correct explanation of statement A.

Question 3 Of 10

Which of the given plant produces cardiac glycosides?

Calotropis Nepenthes Acacia Utricularia

Question 4 Of 10

Strong, sharp spines that get attached to animal’s feet are found in the fruits of

Ar gemone Ecballium Heritier Crossandra

Question 5 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 6 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 7 Of 10

The plant of this group are adapted to live partly in water and partly above substratum and free from water

Xerophytes Mesophytes Hydrophytes Halophytes

Question 8 Of 10

In a fresh water environment like pond, rooted autotrophs are

Nymphaea and typha ‘ CeratophyllumandUtricularia Wolffia and pistia Azolla and lemna

Question 9 Of 10

Read the given statements and select the correct option. i) Hydrophytes possess aerenchyma to support themselves in water. ii) Seeds of Viscum are positively photoblastic as they germinate only in presence of light. iii) Hygroscopic water is the only soil water available to roots of plant growing in soil as it is present inside the micropores. iv) High temperature reduces use of water and solute absorption by roots.

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

Question 10 Of 10

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

habitat niche landscape biome

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 11th Standard Biology - English Medium - Principles of Ecology

Samacheer Kalvi 11th Biology - Principles of Ecology - Book Back Questions in English Medium