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Biology for IGCSE & O level - Reproduction (Section 4)

1
Which of the following are key structures involved in plant sexual reproduction?
Answer
B
C
2
What is a follicle?
Answer
(B)
A structure that contains a developing egg in the ovary.
3
Which part of the flower is the stalk that supports the anther?
Answer
(C)
Filament
4
The male and female gametes fuse to form the:
Answer
(B)
Zygote
5
During pregnancy, what is the role of the umbilical cord?
Answer
(B)
To transport blood and nutrients between the mother and the fetus.
6
What is the function of the cervix?
Answer
(D)
To allow passage from the uterus to the vagina.
7
What is the role of the scrotum in the male reproductive system?
Answer
(C)
To protect and regulate the temperature of the testes.
8
Where does the implantation of a fertilized egg typically occur?
Answer
(C)
In the uterus.
9
What type of asexual reproduction is shown in bacteria?
Answer
(C)
Binary fission
10
Which of the following is a primary sex characteristic in males?
Answer
(D)
Production of sperm.
11
What does a flower need to undergo fertilization?
Answer
(B)
Pollen
12
What is the name for the process when an egg cell is released from the ovary?
Answer
(C)
Ovulation
13
Which part of a flower develops into a seed?
Answer
(B)
Ovule
14
Which of the following is an example of asexual reproduction in plants?
Answer
(C)
Spore formation
15
Which structure provides the sperm with energy for movement?
Answer
(B)
Seminal vesicles
16
During pregnancy, what substance is exchanged between the mother and the fetus through the placenta?
Answer
A
B
C
D
17
What is the collective term for the male parts of a flower?
Answer
(C)
Stamen
18
What is the main role of the scrotum?
Answer
(C)
Regulate temperature of testes
19
What do we call the female sex hormones?
Answer
(B)
Estrogens
20
What is the name of the structure that releases sperm into the urethra?
Answer
(C)
Ejaculatory duct
21
Which hormone is at its highest level during the luteal phase?
Answer
(C)
Progesterone
22
Which phase of the menstrual cycle is characterized by the development of a follicle in the ovary?
Answer
(B)
Follicular phase
23
What is the primary function of the fimbriae?
Answer
(B)
To receive the ovulated egg.
24
What is the main function of the vas deferens?
Answer
(C)
To transport sperm
25
What are the gonads in males?
Answer
(B)
Testes
26
Which of the following is a characteristic of asexual reproduction?
Answer
(C)
Results in offspring genetically identical to the parent.
27
What are the necessary factors for seed germination?
Answer
B
C
D
28
Which of the following adaptations would be most useful for a wind-pollinated flower?
Answer
(C)
Long, feathery stigmas
29
What type of flower is likely to have large, showy petals?
Answer
(B)
Insect-pollinated
30
Which structure is responsible for the production of the hormone that inhibits FSH?
Answer
(A)
Testes
31
Which stage of pregnancy is primarily characterized by the rapid growth and development of the fetus?
Answer
(B)
Fetal development
32
What is the function of the yellow body or corpus luteum?
Answer
(C)
To produce progesterone
33
Which flower characteristic is most important for attracting insects?
Answer
(B)
Production of nectar
34
What is the role of the style in the female reproductive part of a flower?
Answer
(C)
To support the stigma.
35
What happens to the corpus luteum if fertilization and implantation do not occur?
Answer
(C)
It degenerates and stops producing progesterone.
36
Which of the following are advantages of sexual reproduction?
Answer
A
C
37
Which of the following correctly lists the layers of the uterus from innermost to outermost?
Answer
(B)
Endometrium, myometrium, perimetrium.
38
What part of the male reproductive system produces the male gametes (sperm)?
Answer
(B)
Testes
39
What event directly triggers the start of menstruation?
Answer
(C)
A decline in estrogen and progesterone levels.
40
What is the term for the developing egg after fertilization?
Answer
(B)
Zygote
41
What does the term 'gestation' refer to?
Answer
(B)
The period of pregnancy.
42
Which part of the flower develops into a fruit?
Answer
(B)
Ovary
43
Which structure is directly responsible for transporting sperm from the testes?
Answer
(B)
Vas deferens
44
Which part of a flower develops into a fruit?
Answer
(A)
The Ovary
45
Which part of the flower is the female reproductive organ?
Answer
(D)
Carpel
46
The anther and filament together make up the:
Answer
(B)
Stamen
47
Which of the following hormones are produced by the ovaries?
Answer
A
B
48
Which of the following is a secondary sex characteristic in females?
Answer
(B)
Enlargement of breasts
49
What is the function of the ejaculatory duct?
Answer
(C)
To transport sperm and seminal fluid to the urethra.
50
What is the role of the filament?
Answer
(B)
Support the anther