General Science

What is the best description of seed?

A process by which green plants use light to synthesise organic matter from CO2 and water
B mature ovule containing an embryo
C part of stamen producing pollen
D plant organ mainly anchoring and absorbing water/minerals

Which of the following is most closely associated with petal?

A plant hormone promoting stem elongation and influencing germination
B living flexible support tissue
C loss of water vapour from aerial plant parts
D floral part often attracting pollinators

What is the best description of meristematic tissue?

A angiosperm process involving syngamy and triple fusion
B actively dividing plant tissue responsible for growth
C nitrogen-fixing bacteria associated with legume root nodules
D meristem contributing to secondary growth in girth

What is the best description of double fertilisation?

A organelle where photosynthesis occurs
B variety of life at genetic, species and ecosystem levels
C angiosperm process involving syngamy and triple fusion
D major organ for photosynthesis and gas exchange

Which of the following is most closely associated with cross-pollination?

A pollen transfer between genetically different plants of same species
B structure connecting stigma to ovary
C meristem contributing to secondary growth in girth
D mature ovule containing an embryo

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

A microscopic pores regulating leaf gas exchange and transpiration
B meristem contributing to secondary growth in girth
C reproductive structure of flowering plants
D surface receptive to pollen

Which statement correctly identifies germination?

A resumption of embryo growth into a seedling
B loss of water vapour from aerial plant parts
C living flexible support tissue
D transfer of pollen from anther to stigma

In general science, photosynthesis refers to:

A generally dead lignified tissue providing strength
B pollen transfer between genetically different plants of same species
C process by which green plants use light to synthesise organic matter from CO2 and water
D cohesion-tension contribution to upward xylem water movement

In general science, ovary refers to:

A movement of organic solutes through phloem
B interconnected food chains
C flower structure containing ovules
D green pigment absorbing light for photosynthesis

In general science, collenchyma refers to:

A living flexible support tissue
B part of stamen producing pollen
C transfer of pollen from anther to stigma
D plant organ mainly anchoring and absorbing water/minerals

In general science, sclerenchyma refers to:

A mature ovule containing an embryo
B flower structure containing ovules
C generally dead lignified tissue providing strength
D floral part often attracting pollinators

Which of the following is most closely associated with stigma?

A plant response to relative duration of light and dark
B organelle where photosynthesis occurs
C surface receptive to pollen
D variety of life at genetic, species and ecosystem levels

In general science, lateral meristem refers to:

A vascular tissue transporting sugars and other organic assimilates
B capacity of a plant cell to regenerate into a whole plant under suitable conditions
C organism breaking down dead organic matter
D meristem contributing to secondary growth in girth

What is the best description of tissue culture?

A major organ for photosynthesis and gas exchange
B organelle where photosynthesis occurs
C interconnected food chains
D in-vitro cultivation of plant cells/tissues

In general science, nitrogen fixation refers to:

A loss of water vapour from aerial plant parts
B living flexible support tissue
C conversion of atmospheric nitrogen into biologically usable forms
D pollination involving the same plant in the relevant case

Which of the following is most closely associated with thigmotropism?

A growth response to touch
B plant hormone associated with cell elongation and tropisms
C resumption of embryo growth into a seedling
D living tissue often involved in storage/photosynthesis

What is the best description of phloem?

A epidermal extension increasing root absorption surface
B actively dividing plant tissue responsible for growth
C gaseous plant hormone involved in fruit ripening
D vascular tissue transporting sugars and other organic assimilates

What is the best description of root hair?

A major organ for photosynthesis and gas exchange
B organelle where photosynthesis occurs
C epidermal extension increasing root absorption surface
D variety of life at genetic, species and ecosystem levels

In general science, xylem refers to:

A vascular tissue conducting water and minerals mainly upward
B plant flowering when day length is below a critical value
C growth response to light direction
D movement of seeds away from parent plant

In general science, vegetative propagation refers to:

A asexual reproduction from vegetative plant parts
B mature ovule containing an embryo
C floral part often attracting pollinators
D flower structure containing ovules

What is the best description of vegetative propagation?

A asexual reproduction from vegetative plant parts
B plant flowering when day length is below a critical value
C cells regulating stomatal opening
D movement of seeds away from parent plant

Which of the following is most closely associated with stomata?

A plant flowering when day length exceeds a critical value
B asexual reproduction from vegetative plant parts
C growth response to gravity
D microscopic pores regulating leaf gas exchange and transpiration

Which of the following is most closely associated with gibberellin?

A plant response to relative duration of light and dark
B organelle where photosynthesis occurs
C variety of life at genetic, species and ecosystem levels
D plant hormone promoting stem elongation and influencing germination

Which of the following is most closely associated with transpiration pull?

A variety of life at genetic, species and ecosystem levels
B plant response to relative duration of light and dark
C organelle where photosynthesis occurs
D cohesion-tension contribution to upward xylem water movement

In general science, producer refers to:

A movement of seeds away from parent plant
B plant response to relative duration of light and dark
C organism producing organic matter, usually using light or chemical energy
D directional plant growth response to an external stimulus