Question

Please answer Questions. 80,81,82,83,84
three mark questions
thanks in advance :)

Answer 1

80.- a = Seminal Vesicles
The seminal gland, more commonly referred to as the seminal vesicle, holds the liquid that mixes with sperm to form semen.

b= Posturate gland
The prostate gland is a male reproductive organ whose main function is to secrete prostate fluid, one of the components of semen. The muscles of the prostate gland also help propel this seminal fluid into the urethra during ejaculation .

82. The layering method is used for Jasmine plant. for Rose is stem cutting. These methods are by vegetative propagation. In tissue culture method both can be grow by any part or tissues of the plant...


I know these both... I'll share ur questions to my frnd for help... He will answer to ur questions... Thank you..

Answer 2

80.Seminal vesicles secret a significant proportion of the fluid that ultimately becomes semen (60% part).The thick secretion from Seminal vesicles contain proteins, enzymes, fructose, mucus, vitamin C,prostaglandins.The high fructose concentration provide nutrient energy for the spermatozoa.*Prostate gland*Secretion form 33% of semen that helps in sperm motility and viability.
81.Gonorrhea is a sexually transmitted bacterial infection caused by bacterum Neisseria gonorrhoese.AIDS (Acquired Immuno Deficiency Syndrome) is a sexually transmitted viral infection caused by HIV virus. Prevention of both infections are either Abstinence or safe sex using condom.
82.Method used for growing Jasmine is layering method. Method for growing Rose is cutting method. Both require vegetative propagation.
83.When fertilization occurs,the zygote inherits one of the mother's x Chromosome and either x or y Chromosome from the father. The Sperm of father determines the sex of the child. If sperm that fertilizes the egg contains x Chromosome, the zygote will develop into female (xx).If sperm containing y Chromosome fuses with egg,the zygote will develop into male (xy).
84. Lemon, Lilies, Apple,Lemon,Basil Ti Plant,Peas,Peppers, Pumpkins etc plants can be grown from seed as well as from vegetative propagation.
Advantages of vegetative propagation are:-
Vegetative propagation is cheaper, easier, more rapid method of propagation than growing plants from seed;for example many Lilies grow very slowly and take 4 to 7 years to develop flowers when grown from seeds but flowers are produced only after a year or two when grown vegetatively.**The trait of a plant is preserved genetically similar to parent stock.--**The plants skip the risky seedling stage in which many plants die under adverse conditions.**Many seedless varieties of grapes, oranges,lemon are produced by this method. Hope it helps.