The vector of the malaria parasite is
female Aedes mosquito
female Anopheles mosquito
male Culex mosquito
female Culex mosquito
Correct answer is B
The blood stage parasites are those that cause the symptoms of malaria. When certain forms of blood stage parasites (gametocytes, which occur in male and female forms) are ingested during blood feeding by a female Anopheles mosquito.
The interaction of a community of organisms with its abiotic environment constitutes
niche
a food chain
an ecosystem
a mirohabitat
Correct answer is C
No explanation has been provided for this answer.
Which of the following is a feature of the population pyramid of a developing country?
long lifespan
low birth rate
low death rate
short lifespan
Correct answer is D
Features of developing countries:
An example of a filter -feeding animal is
shark
butterfly
whale
mosquito
Correct answer is C
Filter feeding is a method of aquatic feeding in which the animal takes in many small pieces of prey at one time.
16.7%
17.6%
26.7%
16.2%
Correct answer is A
Mass of Soil = 101.5 - 80.5 = 21.0g
Mass of humus = (99.0 - 95.5)g = 3.5g
% of humus = \(\frac{3.5}{21.0} \times \frac{100}{1}}
= 16.7%