General Science

Which statement correctly identifies long-day plant?

A plant flowering when day length exceeds a critical value
B actively dividing plant tissue responsible for growth
C epidermal extension increasing root absorption surface
D gaseous plant hormone involved in fruit ripening

In general science, photoperiodism refers to:

A plant response to relative duration of light and dark
B conversion of atmospheric nitrogen into biologically usable forms
C plant hormone associated with stomatal closure and stress responses
D meristem at root/shoot tips causing primary growth

What is the best description of photoperiodism?

A reproductive structure of flowering plants
B plant response to relative duration of light and dark
C fusion of male and female gametes
D surface receptive to pollen

Which of the following is most closely associated with xylem?

A process by which green plants use light to synthesise organic matter from CO2 and water
B vascular tissue conducting water and minerals mainly upward
C plant organ supporting aerial parts and conducting materials
D linear feeding sequence

Which statement correctly identifies cross-pollination?

A microscopic pores regulating leaf gas exchange and transpiration
B reproductive structure of flowering plants
C movement of seeds away from parent plant
D pollen transfer between genetically different plants of same species

Which statement correctly identifies seed dispersal?

A microscopic pores regulating leaf gas exchange and transpiration
B movement of seeds away from parent plant
C variety of life at genetic, species and ecosystem levels
D reproductive structure of flowering plants

In general science, root refers to:

A capacity of a plant cell to regenerate into a whole plant under suitable conditions
B plant organ mainly anchoring and absorbing water/minerals
C organism breaking down dead organic matter
D vascular tissue transporting sugars and other organic assimilates

Which statement correctly identifies Rhizobium?

A nitrogen-fixing bacteria associated with legume root nodules
B female reproductive structure
C cohesion-tension contribution to upward xylem water movement
D pollen transfer between genetically different plants of same species

What is the best description of phototropism?

A interconnected food chains
B gaseous plant hormone involved in fruit ripening
C growth response to light direction
D movement of organic solutes through phloem

Which statement correctly identifies parenchyma?

A organism producing organic matter, usually using light or chemical energy
B living tissue often involved in storage/photosynthesis
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 root hair?

A resumption of embryo growth into a seedling
B living tissue often involved in storage/photosynthesis
C epidermal extension increasing root absorption surface
D plant hormone promoting stem elongation and influencing germination

Which statement correctly identifies thigmotropism?

A male reproductive part of a flower
B structure developing into a seed after fertilisation
C growth response to touch
D vascular tissue transporting sugars and other organic assimilates

In general science, cytokinin refers to:

A plant flowering when day length is below a critical value
B plant hormone promoting cell division
C movement of seeds away from parent plant
D growth response to light direction

Which statement correctly identifies nitrogen fixation?

A part protecting the developing flower bud
B structure connecting stigma to ovary
C angiosperm process involving syngamy and triple fusion
D conversion of atmospheric nitrogen into biologically usable forms

What is the best description of style?

A structure connecting stigma to ovary
B mature ovule containing an embryo
C meristem contributing to secondary growth in girth
D nitrogen-fixing bacteria associated with legume root nodules

What is the best description of anther?

A floral part often attracting pollinators
B structure developing into a seed after fertilisation
C vascular tissue conducting water and minerals mainly upward
D part of stamen producing pollen

Which of the following is most closely associated with food web?

A pollination involving the same plant in the relevant case
B interconnected food chains
C plant organ supporting aerial parts and conducting materials
D stalk supporting the anther

What is the best description of ovary?

A actively dividing plant tissue responsible for growth
B gaseous plant hormone involved in fruit ripening
C flower structure containing ovules
D epidermal extension increasing root absorption surface

What is the best description of food chain?

A plant hormone associated with cell elongation and tropisms
B living tissue often involved in storage/photosynthesis
C linear feeding sequence
D growth response to gravity

Which statement correctly identifies hydrotropism?

A green pigment absorbing light for photosynthesis
B growth response to water
C plant organ supporting aerial parts and conducting materials
D stalk supporting the anther

What is the best description of apical meristem?

A cohesion-tension contribution to upward xylem water movement
B meristem at root/shoot tips causing primary growth
C epidermal extension increasing root absorption surface
D gaseous plant hormone involved in fruit ripening

Which of the following is most closely associated with sclerenchyma?

A epidermal extension increasing root absorption surface
B cohesion-tension contribution to upward xylem water movement
C pollen transfer between genetically different plants of same species
D generally dead lignified tissue providing strength

In general science, anther refers to:

A resumption of embryo growth into a seedling
B plant hormone associated with cell elongation and tropisms
C living tissue often involved in storage/photosynthesis
D part of stamen producing pollen

Which statement correctly identifies anther?

A surface receptive to pollen
B fusion of male and female gametes
C actively dividing plant tissue responsible for growth
D part of stamen producing pollen

In general science, totipotency refers to:

A pollination involving the same plant in the relevant case
B living flexible support tissue
C capacity of a plant cell to regenerate into a whole plant under suitable conditions
D loss of water vapour from aerial plant parts