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WorksheetsForm 5 Mid Term 1 (2021) Second Assessment
Total questions: 18
Worksheet time: 55mins
Which of the following processes produce clones?
I. the growth of a fungus on a piece of bread
II. the development of plantlets at the leaf margins of Bryophyllum
III. propagation of sugar cane from cuttings
IV. germination of seeds from the same pod
I and II only
II and III only
III and IV only
I and IV only
Each daughter cell produced by mitosis has
half the number of chromosomes as the parent
the same number of chromosomes as the parent
twice the number of chromosomes as the parent
a variable number of chromosomes
Which of the following does NOT from part of meiosis?
recombination
segregation
independent assortment
dependent assortment
The sperm of a certain contains 16 chromosomes in its sperm cell. How many chromosomes will there be in the nucleus of its skin cells?
8
16
32
64
In which of the following parts of a plant would you expect the process of mitosis to occur?
xylem
phloem
in the region behind the root hair
in the region behind the root tip
Some plants such as bryophyllum (Wonder of the World, Leaf of Life) can be propagated from buds at the leaf margin. The buds develop into complete plantlets while still attached to the leaf margin. These plants also flower and produce seeds. The development of the plantlets and the seeds
both take place by mitosis
both take place by meiosis
take place by meiosis for the seed and mitosis for the plantlets
take place by mitosis for the seed and meiosis for the plantlets
In which of the following organs does meiosis occur?
a developing embryo
the skin of a mammal
the testis of a mammal
the tip of the shoot of a plant
Which of the following events does NOT occur during mitosis?
chromosomes exchange genetic information
chromosomes have an exact copy of themselves
two chromatids are joined by a centromere
chromosomes align themselves on the equator of the spindle
Which of the following statements about meiosis is NOT true?
recombination of genes occurs
produces four daughter cells
only occurs in sex organs
chromosome number is maintained
The production of gametes during the process of meiosis can lead to?
smaller population size
larger population size
variation in a population
no change in the characteristics of a population
An organism has 24 chromosomes in its hair cell. How many chromosomes will be present in a liver cell?
6
12
24
48
An organism has 24 chromosomes in its muscle cell. How many chromosomes will be present in its egg cell?
6
12
24
48
Mitotic division results in
two daughter cells with chromosome number n
four daughter cells with chromosome number 2n
two identical daughter cells with chromosome number 2n
four identical daughter cells with chromosome number 2n
Structure Q represents a body cell. Which of the following would represent the nucleus of a gamete from the same organism?
Asexual reproduction gives rise to genetically identical offspring because
a single cell divides by meiosis
only half the chromosomes are involved
all the chromosomes are from one parent
all cell divisions are by mitosis
Mitosis and meiosis occur at different points in the life cycle of a typical flowering plant.
Describe TWO differences between the outcomes of cell division by mitosis and cell
division by meiosis. (4 marks)
Suggest TWO ways in which the process of meiosis may be useful to plants. (2 marks)
Describe mitosis and explain why this process is important in living organisms.
(6 marks)
