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20 questions
1. The term that is used for the mode of nutrition in yeast, mushroom and bread-mould is
(a) autotrophic
(b) insectivorous
(c) saprophytic
(d) parasitic
Organisms which prepare food for themselves using simple naturally available raw materials are referred to as
(a) heterotrophs
(b) autotrophs
(c) parasites
(d) saprophytes
When we observe the lower surface of a leaf through a magnifying lens we see numerous small openings. Which of the following is the term given to such openings?
(a) Stomata
(b) Lamina
(c) Midrib
(d) Veins
In the absence of which of the following will photosynthesis not occur in leaves?
(a) Guard cells
(b) Chlorophyll
(c) Vacuole
(d) Space between cells
Two organisms are good friends and live together. One provides shelter, water, and nutrients while the other prepares and provides food. Such an association of organisms is termed as
(a) saprophyte
(b) parasite
(c) autotroph
(d) symbiosis
Which of the following statements is/are correct?
(i) All green plants can prepare their own food.
(ii) Most animals are autotrophs.
(iii) Carbon dioxide is not required for photosynthesis.
(iv) Oxygen is liberated during photosynthesis.
Choose the correct answer from the options below:
(a) (i) and (iv)
(b) (ii) only
(c) (ii) and (iii)
(d) (i) and (ii)
Which of the following raw material is available in the air for photosynthesis?
(a) Oxygen
(b) Carbon dioxide
(c) Nitrogen
(d) Hydrogen
Pitcher plant traps insects because it
(a) is a heterotroph.
(b) grows in soils which lack in nitrogen.
(c) does not have chlorophyll.
(d) has a digestive system like human beings.
cuscuta is a example of
(a) autotroph
(b) parasite
(c) saprotroph
(d) host
The plant which traps and feeds on insects is :
(a) cuscuta
(b) china rose
(c) pitcher plant
(d) rose
Oxygen liberated during photosynthesis come from ………………
(a) Water
(b) Carbon dioxide
(c) Glucose
(d) ChlorophyII
Which of the following is not required for photosynthesis?
(a) Sunlight
(b) Oxygen
(c) Water
(d) Carbon dioxid
The mode of nutrition in a green plant is ………………
(a) Heterotrophic
(b) Saprophytic
(c) Autotrophic
(d) Holozoic
Which of the following describes the characteristic of a living being?
(a) Nutrition
(b) Excretion
(c) Respiration
(d) All the above
The main function of a leaf is:
(a) To prepare food
(b) To prevent disease
(c) To support the plant
(d) To give a proper shape
The tiny pores present in the leaves of the plants for exchange of gases are
called _____
(a) Stomata
(b) Tracheae
(c) Chloroplast
(d) Spiracles
Rhizobium is an example of
(a) Symbiosis
(b) Parasites
(c) Insectivorous
(d) none of these
Which part of the plant gets carbon dioxide from the air for photosynthesis?
(a) root hair
(b) stomata
(c) leaf veins
(d) sepals
Iodine used to detect presence of starch. It gives starch
(a) red colour
(b) green colour
(c) blue-black colour
(d) colourless appearance
Which of the following statements is NOT true?
(a) Heterotrophs cannot prepare their own food.
(b) Dodder is an example of parasite.
(c) Saprophytes are green.
(d) Pulses and Beans are legumes.
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