General Science

What is the best description of abscisic acid?

A plant hormone associated with cell elongation and tropisms
B growth response to water
C living tissue often involved in storage/photosynthesis
D plant hormone associated with stomatal closure and stress responses

What is the best description of guard cells?

A cells regulating stomatal opening
B transfer of pollen from anther to stigma
C resumption of embryo growth into a seedling
D living tissue often involved in storage/photosynthesis

Which statement correctly identifies photoperiodism?

A living tissue often involved in storage/photosynthesis
B resumption of embryo growth into a seedling
C transfer of pollen from anther to stigma
D plant response to relative duration of light and dark

Which statement correctly identifies xylem?

A growth response to touch
B generally dead lignified tissue providing strength
C plant hormone promoting cell division
D vascular tissue conducting water and minerals mainly upward

In general science, sepal refers to:

A male reproductive part of a flower
B part protecting the developing flower bud
C mature ovary, often with accessory tissues
D structure developing into a seed after fertilisation

Which statement correctly identifies sepal?

A green pigment absorbing light for photosynthesis
B plant organ supporting aerial parts and conducting materials
C part protecting the developing flower bud
D female reproductive structure

What is the best description of parenchyma?

A interconnected food chains
B movement of organic solutes through phloem
C plant hormone associated with stomatal closure and stress responses
D living tissue often involved in storage/photosynthesis

What is the best description of ethylene?

A generally dead lignified tissue providing strength
B plant hormone promoting cell division
C cohesion-tension contribution to upward xylem water movement
D gaseous plant hormone involved in fruit ripening

In general science, apical meristem refers to:

A green pigment absorbing light for photosynthesis
B meristem at root/shoot tips causing primary growth
C movement of organic solutes through phloem
D interconnected food chains

What is the best description of cytokinin?

A angiosperm process involving syngamy and triple fusion
B plant hormone promoting cell division
C meristem at root/shoot tips causing primary growth
D conversion of atmospheric nitrogen into biologically usable forms

In general science, abscisic acid refers to:

A capacity of a plant cell to regenerate into a whole plant under suitable conditions
B plant hormone associated with stomatal closure and stress responses
C organism breaking down dead organic matter
D vascular tissue transporting sugars and other organic assimilates

Which of the following is most closely associated with double fertilisation?

A angiosperm process involving syngamy and triple fusion
B living flexible support tissue
C plant hormone promoting stem elongation and influencing germination
D loss of water vapour from aerial plant parts

What is the best description of ovule?

A plant hormone promoting stem elongation and influencing germination
B growth response to water
C structure developing into a seed after fertilisation
D living flexible support tissue

Which of the following is most closely associated with photosynthesis?

A growth response to light direction
B process by which green plants use light to synthesise organic matter from CO2 and water
C structures housing symbiotic nitrogen-fixing bacteria
D differentiated tissue generally no longer actively dividing

What is the best description of lateral meristem?

A living flexible support tissue
B meristem contributing to secondary growth in girth
C growth response to water
D plant hormone promoting stem elongation and influencing germination

In general science, root hair refers to:

A surface receptive to pollen
B actively dividing plant tissue responsible for growth
C fusion of male and female gametes
D epidermal extension increasing root absorption surface

Which statement correctly identifies fruit?

A female reproductive structure
B actively dividing plant tissue responsible for growth
C mature ovary, often with accessory tissues
D pollen transfer between genetically different plants of same species

In general science, parenchyma refers to:

A living tissue often involved in storage/photosynthesis
B female reproductive structure
C organelle where photosynthesis occurs
D major organ for photosynthesis and gas exchange

Which of the following is most closely associated with biodiversity?

A structure developing into a seed after fertilisation
B mature ovary, often with accessory tissues
C male reproductive part of a flower
D variety of life at genetic, species and ecosystem levels

What is the best description of transpiration?

A cohesion-tension contribution to upward xylem water movement
B loss of water vapour from aerial plant parts
C stalk supporting the anther
D pollination involving the same plant in the relevant case

In general science, pollination refers to:

A cells regulating stomatal opening
B asexual reproduction from vegetative plant parts
C part protecting the developing flower bud
D transfer of pollen from anther to stigma

In general science, carpel/pistil refers to:

A epidermal extension increasing root absorption surface
B cellular oxidation releasing usable energy in plants
C gaseous plant hormone involved in fruit ripening
D female reproductive structure

In general science, leaf refers to:

A organelle where photosynthesis occurs
B reproductive structure of flowering plants
C surface receptive to pollen
D major organ for photosynthesis and gas exchange

Which statement correctly identifies phototropism?

A vascular tissue conducting water and minerals mainly upward
B growth response to light direction
C organism producing organic matter, usually using light or chemical energy
D in-vitro cultivation of plant cells/tissues

Which of the following is most closely associated with carpel/pistil?

A plant flowering when day length exceeds a critical value
B asexual reproduction from vegetative plant parts
C growth response to gravity
D female reproductive structure