ப்ளஸ் டூ படிக்கும் மாணவர்களுக்கு இந்தத் தேர்வு பயனுள்ளதாக இருக்கும். இந்த யூ ட்யூப் தளத்தில் வரும் ஆடியோவை ப்ளே செய்து மீண்டும் மீண்டும் கேளுங்கள். ஆடியோவை கேட்கும் பொழுதே கீழே உள்ள கேள்வி பதில்களை SCROLL செய்து உற்று நோக்குங்கள். பிறகு கேள்விகளில் உள்ள சரியான விடையை தேர்ந்தெடுத்து கடைசியாக SUBMIT செய்யுங்கள். நீங்கள் எடுத்த மதிப்பெண் வரும் அந்த மதிப்பெண்ணை கீழே உள்ள கமெண்ட் பாக்ஸ் இல் பதிவு செய்யுங்கள். மதிப்பெண் குறைந்தால் மீண்டும் ஒருமுறை முயற்சி செய்யுங்கள்... வாழ்த்துக்கள் மாணவர்களே...அன்புடன் - K.K.D.
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1.
Arrange the correct sequence of ecological hierarchy starting from lower to higher level.
2.
Ecology is the study of an individual species is called.
i) Community ecology
ii) Autecology
iii) Species ecology
iv) Synecology
i) Community ecology
ii) Autecology
iii) Species ecology
iv) Synecology
3.
A specific place in an ecosystem, where an organism lives and performs its functions is
4.
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) 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.
5.
Which of the given plant produces cardiac glycosides?
6.
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.
▶️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.
7.
Read the given statements and select the correct option :
▶️Statement A : Cattle do not graze on weeds of Calotropis.
▶️Statement B : Calotropis have thorns and spines, as defense against herbivores.
▶️Statement A : Cattle do not graze on weeds of Calotropis.
▶️Statement B : Calotropis have thorns and spines, as defense against herbivores.
8.
In soil water available for plants is
9.
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 ___
▶️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 ___
10.
Column I represent the size of the soil particles and Column II represents type of soil components.
Which of the following is correct match for the Column I and Column II
❇️ Column - I.
📕I) 0.2 to 2.00 mm.
📕II) Less than 0.002 mm.
📕III) 0.002 to 0.02 mm.
📕IV) 0.002 to 0.2 mm.
❇️ Column - II.
📕i) Slit soil.
📕ii) Clayey soil.
📕iii) Sandy soil.
📕iv) Loamy soil.
Which of the following is correct match for the Column I and Column II
❇️ Column - I.
📕I) 0.2 to 2.00 mm.
📕II) Less than 0.002 mm.
📕III) 0.002 to 0.02 mm.
📕IV) 0.002 to 0.2 mm.
❇️ Column - II.
📕i) Slit soil.
📕ii) Clayey soil.
📕iii) Sandy soil.
📕iv) Loamy soil.
11.
The plant of this group are adapted to live partly in water and partly above substratum and free from water
12.
Identify the A, B, C and D in the given table.
❇️Interaction :
1. Mutualism.
2. B.
3.Competition.
4.D.
❇️Effects on species X :
1. A.
2. (+).
3. (-).
4. (-)
❇️Effects on species Y :
1. (+).
2. (-).
3.C.
4. 0
❇️Interaction :
1. Mutualism.
2. B.
3.Competition.
4.D.
❇️Effects on species X :
1. A.
2. (+).
3. (-).
4. (-)
❇️Effects on species Y :
1. (+).
2. (-).
3.C.
4. 0
13.
Ophrys an orchid resembling the female of an insect so as to able to get pollinated is due to phenomenon of.
14.
A free living nitrogen fixing cyanobacterium which can also form symbiotic association with the water fern Azolla.
15.
Pedogenesis refers to.
16.
Mycorrhiza promotes plant growth by.
17.
Which of the following plant has a nonsucculent xerophytic and thick leathery leaves with waxy coating.
18.
In a fresh water environment like pond, rooted autotrophs are.
19.
Match the following and choose the correct combination from the options given below:
❇️ Column I (Interaction) :
I) Mutualism.
II) Commensalism.
III) Parasitism.
IV) Predation.
V) Amensalism,
❇️Column II (Examples) :
i) Trichoderma and Penicillium.
ii) Balanophora, Orobanche.
iii) Orchids and Ferns.
iv) Lichen and Mycorrhiza.
v) Nepenthes and Diaonaea.
❇️ Column I (Interaction) :
I) Mutualism.
II) Commensalism.
III) Parasitism.
IV) Predation.
V) Amensalism,
❇️Column II (Examples) :
i) Trichoderma and Penicillium.
ii) Balanophora, Orobanche.
iii) Orchids and Ferns.
iv) Lichen and Mycorrhiza.
v) Nepenthes and Diaonaea.
20.
Strong, sharp spines that get attached to animal’s feet are found in the fruits of
21.
Sticky glands of Boerhaavia and Cleome support.
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