General Science

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

What is the best description of fruit?

A flower structure containing ovules
B vascular tissue conducting water and minerals mainly upward
C mature ovary, often with accessory tissues
D floral part often attracting pollinators

Which statement correctly identifies pollination?

A linear feeding sequence
B process by which green plants use light to synthesise organic matter from CO2 and water
C transfer of pollen from anther to stigma
D cellular oxidation releasing usable energy in plants

Which statement correctly identifies short-day plant?

A plant flowering when day length is below a critical value
B mature ovule containing an embryo
C nitrogen-fixing bacteria associated with legume root nodules
D meristem contributing to secondary growth in girth

In general science, stamen refers to:

A cohesion-tension contribution to upward xylem water movement
B male reproductive part of a flower
C pollen transfer between genetically different plants of same species
D generally dead lignified tissue providing strength

In general science, ovule refers to:

A capacity of a plant cell to regenerate into a whole plant under suitable conditions
B organism breaking down dead organic matter
C vascular tissue transporting sugars and other organic assimilates
D structure developing into a seed after fertilisation

In general science, auxin refers to:

A generally dead lignified tissue providing strength
B cellular oxidation releasing usable energy in plants
C gaseous plant hormone involved in fruit ripening
D plant hormone associated with cell elongation and tropisms

What is the best description of thigmotropism?

A growth response to touch
B major organ for photosynthesis and gas exchange
C variety of life at genetic, species and ecosystem levels
D organelle where photosynthesis occurs

What is the best description of root?

A plant hormone promoting stem elongation and influencing germination
B growth response to water
C plant organ mainly anchoring and absorbing water/minerals
D living flexible support tissue

In general science, tissue culture refers to:

A actively dividing plant tissue responsible for growth
B in-vitro cultivation of plant cells/tissues
C fusion of male and female gametes
D surface receptive to pollen

Which statement correctly identifies stomata?

A structures housing symbiotic nitrogen-fixing bacteria
B microscopic pores regulating leaf gas exchange and transpiration
C mature ovary, often with accessory tissues
D differentiated tissue generally no longer actively dividing

Which of the following is most closely associated with auxin?

A plant flowering when day length exceeds a critical value
B asexual reproduction from vegetative plant parts
C plant hormone associated with cell elongation and tropisms
D growth response to gravity

What is the best description of photosynthesis?

A stalk supporting the anther
B green pigment absorbing light for photosynthesis
C process by which green plants use light to synthesise organic matter from CO2 and water
D plant organ supporting aerial parts and conducting materials