General Science

Which of the following is most closely associated with ethylene?

A in-vitro cultivation of plant cells/tissues
B floral part often attracting pollinators
C gaseous plant hormone involved in fruit ripening
D vascular tissue conducting water and minerals mainly upward

In general science, ethylene refers to:

A green pigment absorbing light for photosynthesis
B interconnected food chains
C gaseous plant hormone involved in fruit ripening
D movement of organic solutes through phloem

Which of the following is most closely associated with ovule?

A reproductive structure of flowering plants
B microscopic pores regulating leaf gas exchange and transpiration
C structure developing into a seed after fertilisation
D surface receptive to pollen

Which statement correctly identifies self-pollination?

A pollination involving the same plant in the relevant case
B in-vitro cultivation of plant cells/tissues
C organism producing organic matter, usually using light or chemical energy
D vascular tissue conducting water and minerals mainly upward

In general science, food web refers to:

A interconnected food chains
B asexual reproduction from vegetative plant parts
C part protecting the developing flower bud
D cells regulating stomatal opening

Which statement correctly identifies gibberellin?

A plant hormone associated with stomatal closure and stress responses
B plant hormone promoting stem elongation and influencing germination
C actively dividing plant tissue responsible for growth
D epidermal extension increasing root absorption surface

Which statement correctly identifies root nodules?

A transfer of pollen from anther to stigma
B structures housing symbiotic nitrogen-fixing bacteria
C resumption of embryo growth into a seedling
D living tissue often involved in storage/photosynthesis

Which of the following is most closely associated with tropism?

A stalk supporting the anther
B pollination involving the same plant in the relevant case
C plant organ supporting aerial parts and conducting materials
D directional plant growth response to an external stimulus

What is the best description of nitrogen fixation?

A conversion of atmospheric nitrogen into biologically usable forms
B part of stamen producing pollen
C process by which green plants use light to synthesise organic matter from CO2 and water
D plant organ mainly anchoring and absorbing water/minerals

Which statement correctly identifies food chain?

A linear feeding sequence
B variety of life at genetic, species and ecosystem levels
C plant hormone associated with stomatal closure and stress responses
D movement of organic solutes through phloem

Which statement correctly identifies abscisic acid?

A variety of life at genetic, species and ecosystem levels
B directional plant growth response to an external stimulus
C plant response to relative duration of light and dark
D plant hormone associated with stomatal closure and stress responses

In general science, fruit refers to:

A plant hormone associated with cell elongation and tropisms
B mature ovary, often with accessory tissues
C living tissue often involved in storage/photosynthesis
D resumption of embryo growth into a seedling

Which statement correctly identifies apical meristem?

A plant hormone associated with cell elongation and tropisms
B plant flowering when day length exceeds a critical value
C meristem at root/shoot tips causing primary growth
D growth response to gravity

Which statement correctly identifies stamen?

A flower structure containing ovules
B male reproductive part of a flower
C part protecting the developing flower bud
D mature ovule containing an embryo

What is the best description of stigma?

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

Which statement correctly identifies petal?

A transfer of pollen from anther to stigma
B vascular tissue transporting sugars and other organic assimilates
C part of stamen producing pollen
D floral part often attracting pollinators

Which of the following is most closely associated with Rhizobium?

A epidermal extension increasing root absorption surface
B plant hormone associated with stomatal closure and stress responses
C nitrogen-fixing bacteria associated with legume root nodules
D movement of organic solutes through phloem

Which of the following is most closely associated with stem?

A female reproductive structure
B plant organ supporting aerial parts and conducting materials
C major organ for photosynthesis and gas exchange
D pollen transfer between genetically different plants of same species

Which statement correctly identifies chlorophyll?

A surface receptive to pollen
B fusion of male and female gametes
C green pigment absorbing light for photosynthesis
D actively dividing plant tissue responsible for growth

Which of the following is most closely associated with sepal?

A epidermal extension increasing root absorption surface
B part protecting the developing flower bud
C fusion of male and female gametes
D actively dividing plant tissue responsible for growth

Which of the following is most closely associated with filament?

A growth response to touch
B plant hormone promoting cell division
C stalk supporting the anther
D organism breaking down dead organic matter

Which of the following is most closely associated with phloem?

A in-vitro cultivation of plant cells/tissues
B vascular tissue transporting sugars and other organic assimilates
C male reproductive part of a flower
D vascular tissue conducting water and minerals mainly upward

In general science, Rhizobium refers to:

A differentiated tissue generally no longer actively dividing
B nitrogen-fixing bacteria associated with legume root nodules
C plant hormone associated with cell elongation and tropisms
D mature ovary, often with accessory tissues

What is the best description of permanent tissue?

A structures housing symbiotic nitrogen-fixing bacteria
B differentiated tissue generally no longer actively dividing
C growth response to light direction
D plant flowering when day length is below a critical value

Which of the following is most closely associated with hydrotropism?

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