2 Double fertilization in plants involves the fusion of one sperm with the egg and the other sperm with which structure? A Polar nuclei B Synergid C Antipodal cell D Integument
3 In biological research, the mean is often used to: A Represent the average value of a sample B Show the most frequent value C Show the middle value D Show the spread of data
4 Which artificial propagation method involves growing a new plant from a piece of stem, leaf, or root? A Cutting B Grafting C Layering D Tissue culture
6 Which of the following is an example of discrete biological data? A Height of students B Weight of students C Number of petals on a flower D Blood pressure
8 In a bar chart representing the number of different species in a habitat, what does the height of each bar indicate? A The total number of species in the habitat B The frequency or count for that species C The average number of species per habitat D The median number of species
9 In a biology experiment, the number of leaves on 5 plants are 4, 6, 8, 6, and 10. What is the median number of leaves? A 4 B 6 C 8 D 10
10 Which of the following is a natural method of vegetative propagation in plants? A Cuttings B Grafting C Runners D Tissue culture
11 In biological research, why is the mean often used to describe data? A It is always equal to the median B It uses all data points in its calculation C It is the most frequent value D It is not affected by outliers
13 Double fertilization is a characteristic feature of: A Bryophytes B Pteridophytes C Gymnosperms D Angiosperms
15 Rhizomes are underground stems that grow horizontally. Which plant is an example of propagation by rhizomes? A Ginger B Dahlia C Onion D Potato
16 Which measure of central tendency is most affected by extreme values? A Mean B Median C Mode D Range
17 A bar chart is most useful for: A Showing trends over time B Comparing quantities of different categories C Showing parts of a whole D Showing correlation between variables
18 Which artificial propagation method involves bending a branch to the ground and covering it with soil to encourage rooting? A Layering B Cutting C Grafting D Tissue culture
20 What is the advantage of using the median over the mean? A It uses all data values B It is not affected by extreme values C It is easier to calculate D It is always a whole number
21 Which artificial propagation method involves joining a shoot of one plant to the root stock of another? A Cutting B Layering C Grafting D Tissue culture
22 The mean is calculated by: A Summing all values and dividing by the number of values B Arranging values in order and finding the middle value C Finding the most frequent value D Subtracting the smallest value from the largest value
23 What is the process called when pollen tube releases male gametes into the ovule? A Fertilization B Pollination C Germination D Dispersal
25 Which of the following is a succulent underground stem that stores food? A Rhizome B Corm C Tuber D Stolon