General Science

In general science, guard cells refers to:

A plant hormone promoting stem elongation and influencing germination
B cells regulating stomatal opening
C growth response to water
D organism producing organic matter, usually using light or chemical energy

In general science, transpiration pull refers to:

A growth response to water
B plant hormone promoting stem elongation and influencing germination
C cohesion-tension contribution to upward xylem water movement
D organism producing organic matter, usually using light or chemical energy

Which of the following is most closely associated with fruit?

A conversion of atmospheric nitrogen into biologically usable forms
B plant hormone associated with stomatal closure and stress responses
C mature ovary, often with accessory tissues
D movement of organic solutes through phloem

Which of the following is most closely associated with parenchyma?

A living tissue often involved in storage/photosynthesis
B male reproductive part of a flower
C structure developing into a seed after fertilisation
D mature ovary, often with accessory tissues

What is the best description of sepal?

A cells regulating stomatal opening
B plant flowering when day length exceeds a critical value
C asexual reproduction from vegetative plant parts
D part protecting the developing flower bud

Which of the following is most closely associated with stamen?

A male reproductive part of a flower
B structures housing symbiotic nitrogen-fixing bacteria
C growth response to light direction
D differentiated tissue generally no longer actively dividing

What is the best description of producer?

A angiosperm process involving syngamy and triple fusion
B meristem at root/shoot tips causing primary growth
C conversion of atmospheric nitrogen into biologically usable forms
D organism producing organic matter, usually using light or chemical energy

Which statement correctly identifies tropism?

A cellular oxidation releasing usable energy in plants
B directional plant growth response to an external stimulus
C linear feeding sequence
D process by which green plants use light to synthesise organic matter from CO2 and water

What is the best description of leaf?

A interconnected food chains
B movement of organic solutes through phloem
C major organ for photosynthesis and gas exchange
D plant hormone associated with stomatal closure and stress responses

Which of the following is most closely associated with seed?

A structures housing symbiotic nitrogen-fixing bacteria
B differentiated tissue generally no longer actively dividing
C mature ovule containing an embryo
D growth response to light direction

What is the best description of collenchyma?

A living flexible support tissue
B growth response to touch
C organism breaking down dead organic matter
D capacity of a plant cell to regenerate into a whole plant under suitable conditions

In general science, root nodules refers to:

A conversion of atmospheric nitrogen into biologically usable forms
B structures housing symbiotic nitrogen-fixing bacteria
C directional plant growth response to an external stimulus
D meristem at root/shoot tips causing primary growth

Which of the following is most closely associated with plant respiration?

A nitrogen-fixing bacteria associated with legume root nodules
B meristem contributing to secondary growth in girth
C directional plant growth response to an external stimulus
D cellular oxidation releasing usable energy in plants

Which of the following is most closely associated with phototropism?

A structure developing into a seed after fertilisation
B male reproductive part of a flower
C growth response to light direction
D mature ovary, often with accessory tissues

Which statement correctly identifies totipotency?

A angiosperm process involving syngamy and triple fusion
B part protecting the developing flower bud
C structure connecting stigma to ovary
D capacity of a plant cell to regenerate into a whole plant under suitable conditions

Which statement correctly identifies double fertilisation?

A angiosperm process involving syngamy and triple fusion
B male reproductive part of a flower
C structure developing into a seed after fertilisation
D vascular tissue transporting sugars and other organic assimilates

Which of the following is most closely associated with apical meristem?

A floral part often attracting pollinators
B meristem at root/shoot tips causing primary growth
C vascular tissue conducting water and minerals mainly upward
D in-vitro cultivation of plant cells/tissues

Which of the following is most closely associated with abscisic acid?

A reproductive structure of flowering plants
B microscopic pores regulating leaf gas exchange and transpiration
C surface receptive to pollen
D plant hormone associated with stomatal closure and stress responses

What is the best description of decomposer?

A generally dead lignified tissue providing strength
B cohesion-tension contribution to upward xylem water movement
C plant hormone promoting cell division
D organism breaking down dead organic matter

What is the best description of pollination?

A growth response to light direction
B plant flowering when day length is below a critical value
C structures housing symbiotic nitrogen-fixing bacteria
D transfer of pollen from anther to stigma

What is the best description of stamen?

A male reproductive part of a flower
B plant organ mainly anchoring and absorbing water/minerals
C process by which green plants use light to synthesise organic matter from CO2 and water
D stalk supporting the anther

Which statement correctly identifies biodiversity?

A variety of life at genetic, species and ecosystem levels
B in-vitro cultivation of plant cells/tissues
C vascular tissue conducting water and minerals mainly upward
D plant flowering when day length exceeds a critical value

What is the best description of petal?

A organelle where photosynthesis occurs
B major organ for photosynthesis and gas exchange
C floral part often attracting pollinators
D variety of life at genetic, species and ecosystem levels

Which of the following is most closely associated with translocation?

A epidermal extension increasing root absorption surface
B movement of organic solutes through phloem
C gaseous plant hormone involved in fruit ripening
D cellular oxidation releasing usable energy in plants

Which of the following is most closely associated with flower?

A mature ovule containing an embryo
B reproductive structure of flowering plants
C meristem contributing to secondary growth in girth
D flower structure containing ovules