2000 年
生物 · 共 59 題 · 點擊選項即時核對答案
Questions 30 and 31 refer to the diagram below, which is a diagrammatic representation of the root and the leaf of a plant :
When the plant is deficient in water, which cell type(s) is/are important for supporting the plant ?
Questions 32 and 33 refer to the diagram below, which shows part of the human central nervous system :
Nerve impulses generated in taste buds are interpreted in
Questions 32 and 33 refer to the diagram below, which shows part of the human central nervous system :
The movement of the diaphragm is under the control of
In the alimentary canal, bacteria in food are mainly killed by
Questions 35 and 36 refer to the diagram below, which shows three oat seedlings growing in a light-proof box. The coleoptile of the seedlings are treated in different ways as shown in the diagram :
Which coleoptile(s) would grow towards the right side ?
Questions 35 and 36 refer to the diagram below, which shows three oat seedlings growing in a light-proof box. The coleoptile of the seedlings are treated in different ways as shown in the diagram :
Referring to coleoptile (3), the cells in the photomicrograph below are most likely to be taken from
Questions 37 to 39 refer to the passage below : Test tube babies Some couples are unable to have children. This problem may now be solved by the technique of in vitro fertilization (IVF). Before undergoing the IVF, a woman is given hormones to stimulate a large number of eggs to develop and mature simultaneously in her ovaries. Several eggs are then collected by suctioning through a hollow needle. They are transferred to a petri dish with a nutrient solution and a sample of semen. The fertilized eggs are allowed to develop for two to three days, by which time they have reached the eight- or sixteen-cell stage. Several of these embryos are then placed into the woman’s uterus.
Which of the following are the possible causes of infertility in married couples ?
Questions 37 to 39 refer to the passage below : Test tube babies Some couples are unable to have children. This problem may now be solved by the technique of in vitro fertilization (IVF). Before undergoing the IVF, a woman is given hormones to stimulate a large number of eggs to develop and mature simultaneously in her ovaries. Several eggs are then collected by suctioning through a hollow needle. They are transferred to a petri dish with a nutrient solution and a sample of semen. The fertilized eggs are allowed to develop for two to three days, by which time they have reached the eight- or sixteen-cell stage. Several of these embryos are then placed into the woman’s uterus.
In IVF, fertilization occurs in
Questions 37 to 39 refer to the passage below : Test tube babies Some couples are unable to have children. This problem may now be solved by the technique of in vitro fertilization (IVF). Before undergoing the IVF, a woman is given hormones to stimulate a large number of eggs to develop and mature simultaneously in her ovaries. Several eggs are then collected by suctioning through a hollow needle. They are transferred to a petri dish with a nutrient solution and a sample of semen. The fertilized eggs are allowed to develop for two to three days, by which time they have reached the eight- or sixteen-cell stage. Several of these embryos are then placed into the woman’s uterus.
The doctor has to wait for two to three days before transferring the embryos into the woman’s uterus. This is to
Questions 40 to 42 refer to the following information : The allele for curly hair in humans is dominant to the allele for straight hair. The pedigree below shows the inheritance of curly hair and straight hair in a family :
What is the chance of having another child who is a boy with straight hair ?