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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएचएससी विज्ञान इयत्ता १२

Identify the A, B, C, and D in the given table Interaction Effects on species X Effects on species Y Mutualism A (+) B (+) (-) Competition (-) C D (-) - Botany

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प्रश्न

Identify the A, B, C, and D in the given table

Interaction Effects on species X Effects on species Y
Mutualism A (+)
B (+) (-)
Competition (-) C
D (-) 0

पर्याय

  • A - (+), B - Parasitism, C - (-), D - Amensalism

  • A - (-), B - Mutalism, C - (+), D - Competition

  • A - (+), B - Competition, C - (0), D - Mutalism

  • A - (0), B - Amensalism, C - (+), D - Parasitism

MCQ
जोड्या लावा/जोड्या जुळवा
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उत्तर

A - (+), B - Parasitism, C - (-), D - Amensalism

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Dispersal of Fruits and Seeds
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 6: Principles of Ecology - Evaluation [पृष्ठ १३१]

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सामाचीर कलवी Biology (Botany) [English] Class 12 TN Board
पाठ 6 Principles of Ecology
Evaluation | Q 12 | पृष्ठ १३१
सामाचीर कलवी Botany [English] Class 12 TN Board
पाठ 6 Principles of Ecology
Evaluation | Q 12 | पृष्ठ १५८

संबंधित प्रश्‍न

Read the given statements and select the correct option.

  1. Hydrophytes possess aerenchyma to support themselves in water.
  2. Seeds of Viscum are positively photoblastic as they germinate only in presence of light.
  3. Hygroscopic water is the only soil water available to roots of plants growing in soil as it is present inside the micropores.
  4. High temperature reduces use of water and solute absorption by roots.

Read the given statements and select the correct option.

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

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 a defense against herbivores.


In soil water available for plants is


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


In a fresh water environment like pond, rooted autotrophs are


Sandy soil is not suitable for cultivation. Explain why?


What is thermal stratification? Mention their types.


What is myrmecophily?


What is a seed ball?


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


Explain different types of hydrophytes with examples.


What are the advantages of seed dispersal?


Describe the dispersal of fruit and seeds by animals.


Read the following statements and fill up the blanks with the correct option.

  1. Total soil water content in soil is called ______
  2. Soil water not available to plants is called ______
  3. Soil water available to plants is called ______

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


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