Question
Study the table showing the population interaction between species Z and Y respectively. Assign the appropriate +/- signs for A, B, D, E and respective interactions for C and F.
Species 'Z' Species 'Y' Name of Interaction
A B Mutualism
- - C
D E Parasitism
+ O F

Answer

A = +
B = +
C = Competition
D = +
E = -
F = Commensalism

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A colour blind child is born to a normal couple. Work out a cross to show how it is possible. Mention the sex of this child.
Describe the process of microsporogenesis.
Define pollination. Describe briefly about pollination in vallisnaria and sea grass.
Identify 'a', 'b', 'c', 'd', 'e' and 'f' in the table given below:
No. Syndrome Cause Characteristics of affected individual Sex Male/Female/Both
1 Down’s Trisomy of 21
‘a’ (i)
(ii)
'b'
2 ‘c’ XXY Overall masculine development ‘d’
3 Turner’s 45 with OX
‘e’ (i)
(ii)
‘f’
Explain how oxygen and the chemical composition of detritus control decomposition.
What is natural selection? How is artificial selection different from natural selection? Give one example each from plants and animals where artificial selection has operated.
  1. Which agents cause allergy?
  2. How does the human body respond to allergens?
Name the categories of organisms used as biofertilisers with an example for each. How do they function in organic farming?
A and B are two different cloning vectors in two different bacterial colonies cultured in chromogenic substrate. Bacterial colonies with cloning vector A were colourless, whereas those with B were blue coloured. Explain by giving reasons the cause of difference in colour that appeared.
During a fire in an auditorium, a large number of assembled guests got burnt beyond recognition. Suggest and describe a modern technique that can help hand over the dead to their relatives.