Write the characteristics of Ramapithecus, Dryopithecus and Neanderthal man.
Ramapithecus about 15 mya, primates called Ramapitheus were existing. They were hairy and walked like gorillas and chimpanzees.Ramapithecus were more like man.
Dryopithecus about 15 mya, primates called Dryopitheus existing was more ape like.
The Neanderthal man with a brain size of 1400cc lived in near east and central Asia between 40,000-1,00,000 years back. They used hides to protect their body and burried their dead.
Fill in the blanks:
(a) Humans reproduce __________. (asexually/sexually)
(b) Humans are__________. (oviparous/viviparous/ovoviviparous)
(c) Fertilization is __________ in humans. (external/internal)
(d) Male and female gametes are __________. (diploid/haploid)
(e) Zygote is __________. (diploid/haploid)
(f) The process of release of the ovum from a mature follicle is called__________.
(g) Ovulation is induced by a hormone called the __________.
(h) The fusion of male and female gametes is called _____________.
(i) Fertilisation takes place in _____________.
(j) Zygote divides to form _____________which is implanted in uterus.
(k) The structure which provides vascular connection between fetus and uterus is called ____________.