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

Question 1 Of 10

Sticky glands of Boerhaavia and Cleome support

Anemochory Zoochory Autochory Hydrochory

Question 2 Of 10

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

Bryophyllum Ruscus Nerium Calotropis

Question 3 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 4 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 5 Of 10

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

Nostoc Anabaena chlorella Rhizobium

Question 6 Of 10

In a fresh water environment like pond, rooted autotrophs are

Nymphaea and typha ‘ CeratophyllumandUtricularia Wolffia and pistia Azolla and lemna

Question 7 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 8 Of 10

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

Ar gemone Ecballium Heritier Crossandra

Question 9 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

Question 10 Of 10

Ecology is the study of an individual species is called

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

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

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