English
Tamil Nadu Board of Secondary EducationHSC Science Class 12

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

Advertisements
Advertisements

Question

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

One Line Answer
Advertisements

Solution

Raunkiaer classified the world’s vegetation into the following four types. They are megatherms, mesotherms, micro terms, and hekistotherms.

shaalaa.com
Dispersal of Fruits and Seeds
  Is there an error in this question or solution?
Chapter 6: Principles of Ecology - Evaluation [Page 132]

APPEARS IN

Samacheer Kalvi Biology (Botany) [English] Class 12 TN Board
Chapter 6 Principles of Ecology
Evaluation | Q 48 | Page 132
Samacheer Kalvi Botany [English] Class 12 TN Board
Chapter 6 Principles of Ecology
Evaluation | Q 48 | Page 160

RELATED QUESTIONS

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.

In soil water available for plants is


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


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


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


Sandy soil is not suitable for cultivation. Explain why?


What is myrmecophily?


What is co-evolution?


Explain different types of hydrophytes with examples.


What are the advantages of seed dispersal?


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 ______

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

Column I represent the size of the soil particles and Column II represents the type of soil components. Which of the following is the correct match for the Column I and Column IL

Column - I Column - II
I) 0.2 to 2.00 mm i) Slit soil
II) Less than 0.002 mm ii) Clayey soil
III) 0.002 to 0.02 mm iii) Sandy soil
IV) 0.002 to 0.2 mm iv) Loamy soil

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


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×