CBSE Class 10 Answered
Please solve Que1the following doubts :-
Que:- Why can't we write the male sex chromosomes as YX instead of XY?? Similarly ,why cant we write the heterogeneous traits with the recessive allele first and then the dominant one ???as in height traits we always write Tt and not tT why???
Que2:- Describe the process of fertilisation in human beings.( for 5 marks )
Que3:- Describe the structure and function of placenta.
Que4 :- How does rose reproduce?
A. By vegetative propagation
B. By sexual reproduction
Asked by advssdrall | 10 Nov, 2020, 09:43: PM
Expert Answer
Q.2 The process of fertilisation is the meeting of an egg cell from the female and a sperm cell from the male. Basically the fusion of a sperm and an ovum. When sperms come in contact with an egg, one of the sperms may fuse with the egg. Such fusion of the egg and the sperm is called fertilisation. Fertilisation which takes place inside the female body is called internal fertilisation.
Q.3 Please click on Placenta toview the solution to your query.
Answered by Sheetal Kolte | 11 Nov, 2020, 11:38: AM
Application Videos
-
Embryo Development in Humans
This video explains the process of embryo nourishment inside the uterus. -
Role of fallopian tubes in reproduction ...
This video explains the importance of fallopian tubes in reproduction. -
Fraternal and Identical twins
This video explains the concept of fraternal or identical twins. -
Menstrual cycle
This video explains the process of menstrual cycle in females. -
Role of Placenta
This video describes the structure and function of placenta.
Concept Videos
-
Reproduction in Organisms
Learn the process of fertilization in human beings, menstrual cycle, metho... -
Reproduction in Organisms
Learn the process of fertilization in human beings, menstrual cycle, metho... -
Reproduction in Organisms
Learn the process of fertilization in human beings, menstrual cycle, metho... -
How Do Organisms Reproduce?
How Do Organisms Reproduce?, Sexual Reproduction in Humans -
How Do Organisms Reproduce?
How Do Organisms Reproduce?, Sexual Reproduction in Humans
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