Ecology is the study of an individual species is called
i) Community ecology
ii) Autecology
iii) Species ecology
iv) Synecology

(a)

 i only

(b)

ii only 

(c)

 i and iv only

(d)

ii and iii only

Read the given statements and select the correct option.
i) Loamy soil is best suited for plant growth as it contains a mixture of silt, sand and clay.
ii) The process of humification is slow in case of organic remains containing a large amount of lignin and cellulose.
iii) Capillary water is the only water available to plant roots as it is present inside the micropores.
iv) Leaves of shade plant have more total chlorophyll per reaction centre, low ratio of chl a and chl b are usually thinner leaves.

(a)

i, ii and iii only

(b)

ii, iii and iv only

(c)

i, ii and iv only

(d)

ii and iii only

In soil water available for plants is ____.

(a)

gravitational water

(b)

chemically bound water

(c)

capillary water

(d)

hygroscopic water

Read the following statements and fill up the blanks with correct option.
i) Total soil water content in soil is called ______
ii) Soil water not available to plants is called _______
iii) Soil water available to plants is called _____.

(a)

(i)	(ii)	(iii)
Holard	Echard	Chresard

(b)

i	ii	iii
Echard	Holard	Chresard

(c)

i	ii	iii
Chresard	Echard	Holard

(d)

i	ii	iii
Holard	Chresard	Echard

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

(a)

Myrmecophily

(b)

Ecological equivalents

(c)

Mimicry

(d)

None of these

Pedogenesis refers to _____.

(a)

Fossils

(b)

Water

(c)

Population

(d)

Soil

Mycorrhiza promotes plant growth by _______.

(a)

Serving as a plant growth regulators

(b)

Absorbing inorganic ions from soil

(c)

Helping the plant in utilizing atmospheric nitrogen

(d)

Protecting the plant from infection

In a fresh water environment like pond, rooted autotrophs are ______.

(a)

Nymphaea and typha

(b)

Ceratophyllum and Utricularia

(c)

Wolffia and pistia

(d)

Azolla and lemna

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

(a)

Argemone

(b)

Ecballium

(c)

Heritier

(d)

Crossandra

The ideal soil for Cultivation is:

(a)

Loamy soil

(b)

Clayey soil

(c)

Sandy soil

(d)

Silt soil

The study of soil is called as __________

(a)

Lithotripsy

(b)

Lithosphere

(c)

Pedology

(d)

Pedigree analysis

Identify the indicators of fire.

(a)

Pucinia

(b)

Pyricularia

(c)

Pyronema

(d)

Peziza

Statement 1: Holoparsites depend totally on other organisms for nutrition.
Statement 2: Durnta is holoparasite.

(a)

Statement 1 is correct. Statement 2 is incorrect.

(b)

Statement 1 is incorrect. Statement 2 is correct

(c)

Both the statements are correct.

(d)

Both the statements are incorrect

Assertion (A) : Plains and valleys are rich in vegetation
Reason (R): Slow drain of surface water and better water retention is noticed.

(a)

A is true R is false

(b)

R explains A

(c)

A and R are false

(d)

A and R are true. But R doesnot explains A

Earth day is observed on

(a)

April 22^nd

(b)

March 21^st

(c)

July 07^th

(d)

September 16^th

What is ecological hierarchy? Name the levels of ecological hierarchy. 

Distinguish habitat and niche

‘Green algae are not likely to be found in the deepest strata of the ocean’. Give at least one reason.

What is Phytoremediation ?

What is Albedo effect and write their effects?

What is ecological hierarchy?

Define
(a) Autecology
(b) Synecology

What is Albedo effect?

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

Name any two positive interactions with an example for each.

What is mutualism? Mention any two example where the organisms involved are commercially exploited in modern agriculture.

Mention any two significant roles of predation plays in nature.

Why do submerged plants receive weak illumination than exposed floating plants in a lake?

What is seed ball?

What is thermal stratification? Explain its types.

Explain briefly about the three types of fire.

Direction of mountain determines the richness of vegetation - Justify.

Mention any two species that exhibits protective mimicry.

What is co-evolution? Explain with example.

Point out the Anatomical adaptations exhibited by the Halophytes.

How is anemochory differ from zoochory?

Explain Raunkiaer classification in the world’s vegetation based on the temperature.

What is soil profile? Explain the characters of different soil horizons.

Enumerate the anatomical adaptations of xerophytes.

What are the advantages of seed dispersal?

Explain various edaphic factors that affect vegetation.

Point out any five morphological adaptations of epiphytes.