(a) (i) Write the function of each of the following: (I) Seminal Plasma (II) Acrosome of human sperm (ii) Differentiate between menarche and…

Seminal plasma provides nutrition as it is rich in fructose

calcium and certain enzymes, provides transportation medium for sperm, helps in maintaining pH of the semen, helps in maturation and motility of sperms, helps in lubrication of penis, or any other correct point

$\displaystyle 90$ Zooplanktons

$\displaystyle 40$ Phytoplanktons

$\displaystyle 120$ Fishes

Increasing biomass

Trophic level

Secondary consumers /SC

Primary consumers / PC

Primary producers / PP

Acrosome is filled with enzymes which help to fertilize

ovum/The secretions of the acrosome help the sperm enter into the cytoplasm of the ovum

Menarche

Menopause

Is the beginning of the

first menstrual cycle

It marks the end of the

menstrual cycle

Starts at puberty

Ceases/stops

around

the age of $\displaystyle 50$ years

Apomixis is production of seeds without fertilisation whereas parthenocarpy is formation of fruits without fertilisation.

Floral parts other than the ovary also contribute to form fruit in cashew and apple so they are not called as true fruits/ in apple and cashew the thalamus also contributes to fruit formation.