Cell walls commonly are classified into two major types. This classification is based not on structural or biochemical differences;

A) primary walls and

B) secondary walls

i) walls formed during cell growth

ii) walls that are formed after cell enlargement stops

iii) multilayered walls that are strengthened and waterproofed by lignin

iv) Usually they are thin and simple, but some times may be thick and multilayered, such as those found in collenchyma or in the epidermis

v) highly specialized in structure and composition, reflecting the differentiated state of the cell

Which of the following is the correctly represents features of primary and secondary walls?

#Question id: 10709

#Unit 10. Ecological Principles

Researcher study the diversity of 2 communities, following is relative abundance of each species at different community? ( ln .5 = -0.69  , ln .25= -1.38  , ln .12= -2.12)

What is value of Shannon index of community A and community B respectively?

#Question id: 10710

#Unit 10. Ecological Principles

Researcher study the diversity of 3 communities, 4 species was recorded from all community. Presence (+) and absence (-) of species are given 

What is similarity coefficient between A & B, B & C, and A & C RESPECTIVELY?

#Question id: 10711

#Unit 10. Ecological Principles

Following table shows the number of individuals of five tree species in a community

Based on the above, the Simpson’s index and Shannon weaver of the community will be respectively?

#Question id: 10712

#Unit 10. Ecological Principles

Researcher study the diversity of 4 communities, following is relative abundance of each species at different community? ( ln .5 = -0.69  , ln .25= -1.38, ln .12= -2.12)

Which of the following is decreasing order of their Shannon weaver diversity index of community?

#Question id: 10713

#Unit 10. Ecological Principles

Following is sampling data of five species in five quadrate is represent. Which of the following is a correct order of decreasing abundance?

#Question id: 10714

#Unit 10. Ecological Principles

What is value of Gini-simpson indices of following community?