What type of human population is represented by the following age pyramid?
Stable population
Declining Population
Expanding population
Expanding population
B.
Declining Population
An age pyramid is a graphic representation of the proportion of various age groups of a population with pre-reproductive at the reproduction in the middle and posts-reproductive at the top. For human population, the age pyramids show age distribution of males and females in the combined diagram. The shape of the age pyramids reflects the growth status of the population. In a declining population the shape of the pyramid is urn- shaped.
peptide synthesis inside a cell takes place in
mitochondria
chromoplast
ribosomes
ribosomes
When two unrelated individuals or lines are crossed, the performance of F1 hybrid is often superior to both its parents. This phenomenon is called
transformation
splicing
metamorphosis
metamorphosis
The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for
escaping any possible compression by the visceral organs
providing more space for the growth of epididymis
Providing a secondary sexual feature for exhibiting the male sex
Providing a secondary sexual feature for exhibiting the male sex
An organism used as a biofertilizer for raising soybean crop is
Azospirillum
Rhizobium
Nostoc
Nostoc
In which one of the following pollination is autogamous?
Xenogamy
Chasmogamy
Cleistogamy
Cleistogamy
where will you look for the sporozoites of the malarial parasite?
Red blood corpuscles of humans suffering from malaria
Spleen of infected humans
Salivary glands of freshly moulted female Anopheles mosquito
Salivary glands of freshly moulted female Anopheles mosquito
he figures given below depicts a diagrammatic sectional view of the female reproductive system of humans. Which one set of three parts out of A-F have been correctly identified.
C- Infundibulum, D -Fimbriae, E -cervix
D- oviducal funnel, E Uterus, F- cervix
A - Perimetrium, B - Myometrium, C -Fallopian tube
A - Perimetrium, B - Myometrium, C -Fallopian tube
