WorksheetsReproduction, Development & Growth
Total questions: 15
Worksheet time: 24mins
Which of the following statements regarding spermatogenesis and oogenesis is true?
Meiosis in oogenesis produces one mature egg from one primary oocyte.
Meiosis in spermatogenesis produces two cells from one primary spermatocyte.
Spermatogenesis begins at birth.
Oogenesis begins at puberty.
Select the germ layer that produces the skeletal system later on in mammals from the embryo.
Mesoderm
Ectoderm
Endoderm
Ectoderm and endoderm
Select from the following graphs, the one that accurately shows the growth of an insect that does complete metamorphosis from the time it hatches till the time it becomes an adult
Which among the following processes involves meiosis?
I Spermatogenesis
II Oogenesis
III Fertilisation
IV Blastulation
III only
I and II
III and IV
I, II and III
Seeds of many plants cease (stop) developing when in unfavourable conditions. They can survive for many years in this state which is called
germination.
dormancy.
geotropism.
hibernation.
Identify the organ in an insect that produces the juvenile hormone
Corpus allatum gland
Corpus cardiacum gland
Neurosecretory cells
Prothoracic gland
The table shows types of hormones and their effects. Match the effects to the hormones correctly
(f) I (g) II (h) III (i) IV
(f) I (g) III (h) IV (i) II
(f) II (g) III (h) I (i) IV
(f) IV (g) I (h) II (i) III
Table shows three experiments on ecdysis that was conducted on a bloodsucking insect, Rhodinus sp. Which of the following statement is an untrue conclusion of the above experiment?
Ecdysis in insects is regulated by a substance that can diffuse
The substance that stimulates ecdysis is transported by haemolymph
The hormone for ecdysis is produced a few days after the insect sucks blood
The swelling of the alimentary canal upon sucking of blood stimulates the brain to trigger ecdysis
The diagram shows stages of oogenesis. What is stage W?
Mitosis
Meiosis I
Meiosis II
Differentiation
The diagram shows a simplified scheme of interaction of five types of hormone I, II, III, IV and V from formation of gamete to parturition of foetus in mammals. Which of the following has correctly matched the five hormones?
Follicle stimulating hormon (I)
Estrogen (II)
Luteinising hormone (III)
Progesterone (IV)
Oxytocin (V)
Follicle stimulating hormon (I)
Estrogen (III)
Luteinising hormone (IV)
Progesterone (V)
Oxytocin (II)
Follicle stimulating hormon (II)
Estrogen (I)
Luteinising hormone (III)
Progesterone (IV)
Oxytocin (V)
Follicle stimulating hormon (II)
Estrogen (III)
Luteinising hormone (V)
Progesterone (I)
Oxytocin (IV)
What is the effect of an increase in oestrogen concentration between the 11th and 14th day of the menstrual cycle?
The inhibition of GnRH
The disintegration of endometrium
The development of corpus luteum
An upsurge in the concentrations of FSH and LH
Some seed components and their functions during seed development are shown in the table. Which seed component corresponds correctly to their respective functions?
I - p, II - q, III- r
I - p, II - r, III- q
I - q, II - p, III- r
I - q, II - r, III- p
The scheme shows the control of hormone X and Y in the growth of insects at larval and adult stages. Which of the following statements is correct about the control of hormones X and Y in the growth of insects?
Hormone Y stimulates the moulting process at larval phase with the presence of hormone X
Hormone Y stimulates the development of adult characteristics with the presence of hormone X
Hormone Y stimulates the development of larva characteristics with the presence of hormone X
Hormone X stimulates the development of adult characteristics without the presence of hormone Y
How does degeneration of corpus luteum relate to the sloughing off of the endometrium layer in a menstrual cycle.
Corpus luteum is no longer secreting progesterone and oestrogen to maintain the endometrium layer
Degeneration of corpus luteum induces the secretion of leutinising hormone which cause the sloughing off of the endometrium layer.
As corpus luteum degenerates, the anterior pituitary gland secretes follicle stimulating hormone which causes the sloughing off of the endometrium layer.
Degeneration of corpus luteum induces the uterus wall to contract and expel the endometrium layer gradually.
Functions of water in seed germination are
I Provide nutrients for metabolic reaction.
II Dissolve and activate enzymes and hormone
III To dilute the abscisic acid
IV To soften and break the testa
I and II
II and III
III and IV
I and IV
