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WorksheetsBioscore DB014 Chapter 8 Reproduction and Development
Total questions: 20
Worksheet time: 14mins
1. An unfertilised, mature embryo sac of a flowering plant contains
fruit.
egg cell.
microspore mother cell.
endosperm.
2. .......... undergoes meiosis in the development of pollen grains.
Microspore
Megaspore
Microsporocyte
Megasporocyte
3. Pollination occurs on the (a)
4. Double fertilisation involves
one male gamete to an egg cell and one male gamete to polar nuclei.
one male gamete to an egg cell and one male gamete to the egg nucleus
two male gametes and one egg
two male gametes and two eggs
5. Megaspore mother cell...
undergoes meiosis to produce three haploid megaspores.
is a diploid cell located in an ovule.
divides mitotically to form a pollen grain.
is a female gametophyte.
6. A human spermatozoon's head part contains a large vesicular structure known as (a)
7. The neck part of a spermatozoon has (a) , which help providing energy for its tail motility.
8. Spermatozoa mature in
seminal vesicles.
interstitial cells
epididymis
ejaculatory duct
9. All of the following are diploid EXCEPT
spermatids
spermatogonia
primordial germ cells
primary spermatocytes
10. A secondary oocyte jelly-like coat is known as (a)
11. In a secondary oocyte, meiotic division is arrested at (a) (phase).
12. In oogenesis, primary oocyte undergoes (a) to produce secondary oocytes.
Which the following statements is CORRECT for regulation of spermatogenesis.
Leydig cells assist in the development of spermatozoa.
High level of testosterone inhibits secretion of GnRH, FSH and LH.
Testosterone is secreted from the Sertoli cells.
Inhibin induces the rate of spermatogenesis to decrease.
Which of the following is the INCORRECT match of organs/structures with their hormone secretions.
Developing Follicles
--> Estrogen
Anterior pituitary
--> FSH
Corpus luteum
--> LH
Hypothalamus
--> GnRH
The first day of ovarian cycle...
is the first day of menstruation
secondary oocyte is released to the oviduct.
a new follicle develops
corpus luteum secretes progesterone
Luteinising hormone (LH) level is the highest at day
1.
13.
14.
19.
The effects of high LH include
Anterior pituitary is inhibited.
Final maturation of follicle.
Trigger the release of secondary oocyte to the oviducts.
Endometrium disintegrates.
Hormone (a) inhibit secretion FSH and LH after ovulation to prevent development of new follicles.
Acrosomal reaction involves
digestion of zona pellucida
spermatozoa penetrates corona radiata
binding of sperm head to receptor on zona pellucida.
release of acrosin
Entrance of a spermatozoon head into the oocyte cytoplasm triggers.....
completion of meiosis in the secondary oocyte.
capacitation.
release of spermatozoon's flagellum.
cortical reactions.
