Reproduction System
The average duration of menstrual cycle in human female is ___ days.
14
28
30
31
28
The menstrual cycle lasts for about 28 days in female human beings. The release of ovum is called ovulation and it takes place during the mid period of this cycle. The first mentrual cycle in the lifespan of a female is called menarche and the last menstrual cycle is called menopause.
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Haploid microspores are produced withinA. stamens
B. carpels
C. filament
D. pollen sac
After the structural changes in the spermatids, the spermatids converts into
A. spermatogonia
B. sperms
C. egg cells
D. spermatocytes
Seedless fruits are the result of
A. parthenogenesis
B. parthenocarpy
C. cross pollination
D. self pollination
The type of asexual reproduction in which new offspring is developed by the unfertilized egg is called
A. fragmentation
B. parthenogenesis
C. vegetative propagation
D. spore formation
After the accumulation of sperms in collecting ducts of testes, the sperms are passed to
A. prostate gland
B. epicotyls
C. epididymis
D. scrotum
Through seed germination, an embryo develops into
A. complete plant
B. zygote
C. flower
D. seedling
The reproductive system of the male rabbit does not include
A. placenta development
B. pairs of testes
C. ducts to transport sperms
D. glands for secretion to sperm
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