The question is incomplete as it does not have the options which are:
A) eight legs.
B) two pairs of antennae.
C) a sessile lifestyle.
D) an open circulatory system.
E) parapodia.
Answer:
D) an open circulatory system.
Explanation:
In the given question, the characteristics of an organism are given which are:
1. Exoskeleton- outer covering composed of cuticle
2. system of tubes for gas exchange- do not respire but has tubes called trachea from which the air diffuses
3. modified segmentation- segmented bodies
All these characteristics show that the organism belongs to the Arthropods group of animals.
The Arthropods since having trachea for the diffusion of gas, therefore, possess an open circulatory system in which blood does not flow in the vessels but the open cavities in the body.
Thus, Option-D is the correct answer.
Yes, i think the change in temperature will affect the animals phyisiology
Answer:
0.8
Explanation:
Allele frequency simply shows how common an allele is in a population.
It is calculated by counting the number of times it appears divided by the total number of copies of the gene.
The frequency of all alleles of a gene present in a population must equate to 1.
so,<u><em> p+q=1</em></u>
If the Allele frequency of A whose phenotype are green grasshoppers is 0.2 to find the frequency for a (brown grasshoppers) will be';
<u><em> 1-0.2=0.8</em></u>
Phytoplankton form the base of a pelagic marine ecosystem.
