WorksheetsReproduction and Development
Total questions: 32
Worksheet time: 16mins
Which of the following is not asexual reproduction?
Budding
Fragmentation
Parthenogenesis
Fertilization
Which of the following is true about sexual reproduction
Occurs only during unfavorable condition
Occurs in particularly sessile animals
Promotes genetic variations
Produces genetically identical offsprings
How many nuclei are present in the embryo sac before fertilization
2
4
8
16
Where are sperm produced?
Interstitial cells
Prostate gland
Seminiferous tubules
Epididymis
What occurs during an acrosome reaction?
Enzymes are released and the outer layer of the egg is digested.
Calcium ions are released and the sperm fuses with the egg.
The sperm binds to the egg.
A special chemical that attracts the egg to the sperm is secreted
What is the function of the chorion?
To absorb shock in case of fall
To form blood cell
To provide nourishment for the fetus
To permit gas exchange.
What happens during the second stage of labor?
the cervix begins to dilate
the contraction becomes stronger
the fetus is delivered
the uterus begins to contract
The male gametophyte of a flowering plant is the
pollen sac
microspore
sperm cell
pollen grain
The part of the flower that produces pollen is the
petal
sepal
anther
pistil
Pollen grains on the stigma of a flower reach the egg by forming a
cotyledon
pollen tube
carpel
generative cell
From what flower part does the fruit of a plant typically develop?
Ovary
Ovule
Calyx
Corolla
The endosperm nucleus is _______________.
Haploid
Diploid
Triploid
Tetraploid
Pollen tube contain
one male nucleus
two male nuclei
three male nuclei
four male nuclei
The most important part of the plant for continuation of the life of the species is_____
stem
root
flower
leaf
Pollination occurs when pollen lands on the______________.
style
stigma
filament
anther
Which one of the following statements about the ovary is INCORRECT?
The ovary contains one or more ovules.
Pollen is produced in the ovary.
Fertilization takes place in the ovary.
The stigma is connected to the ovary by the style.
The filament and anther make up the___________
stamen
carpel
seed
ovary
Which one of the following is not part of seed?
Testa
Plumule
Zygote
Radicle
A pollen grain does not normally germinate until ___________.
a zygote is formed
cleavage has occurred
pollination has occurred
a diploid nucleus is formed
Pollination occurs when _____________________
pollen from the stigma is transferred to the anther of the ovary
pollen from the anther is transferred to the stigma of the ovary
pollen from the anther is transferred to the style of the ovary
sperm in the pollen tube combines with the polar nuclei in the ovule
What stimulates ovulation?
High levels of LH
Low levels of LH
Low levels of estrogen
High levels of progesterone
All the following statements about gametogenesis are true except:
Spermatogenesis continues throughout the male’s life while oogenesis stops at menopause.
Oogenesis results in one functional ovum, whereas spermatogenesis results in millions of sperm.
Spermatogenesis is a continous,uninterrupted process; oogenesis undergoes long resting periods.
the primary spermatocyte is a haploid cell.
Which of the statements is incorrect during fertilization?
Acrosome reaction releases enzymes that digest a pathway through the zona pellucida.
The membrane of sperm head fuses with the membrane of the oocyte.
The acrosome releases enzymes into the secondary oocyte to prevent other sperm from entering the egg.
The male nucleus fuses with the female nucleus to form a diploid zygote.
The cortical reaction functions directly in the
formation of a fertilization membrane.
release of hydrolytic enzymes from the sperm cell.
fusion of egg and sperm nuclei
involved in capacitation process.
At what stage o the zygote, does implantation occur in human pregnancy?
morula
early cleavage
blastocyst
gastrula
During human gestation, organogenesis occurs
While embryo is in the oviduct
During the blastocyst stage
In the first trimester
In the third trimester
Which of the following does the nervous system arise from?
ectoderm
endoderm
mesoderm
chorion
What is the function of the chorion?
to absorb shock in case fall
to form blood cells
to form umbilical cord
to permit gas exchange.
Which of the following statements is not true about hormonal control during birth in humans?
The release of prostaglandin from the placenta is increased.
The level of progesterone in the blood is higher than that of oestrogen.
The level of oestrogen increases during last weeks of pregnancy.
The posterior lobe of the pituitary gland secretes oxytocin.
Which of the following hormones are involved during parturition in human?
I Estrogen
II Oxytocin
III Prostaglandin
IV Human chorionic gonadotrophin
I and III
II and IV
I, II and III
I, II and IV
Which of the following are the functions of progesterone?
I Inhibits secretion of FSH
II Stimulates thickening of endometrium
III stimulates ovulation
IV Stimulates growth of glands
I, II and III
I, II and IV
I, II and III
II, III and IV
What triggers the menstruation to occur?
I rising levels of FSH and LH
II falling levels of estrogen
III falling levels of progesterone
IV rising level of progesterone
I, II and IV
I and III
II and III
I, II and III
