Q 1 – Green plants are:
(a) herbivores
(b) autotrophs
(c) heterotrophs
(d) omnivores
Ans. (b) autotrophs
Q 2 – During photosynthesis
(а) solar energy is converted into chemical energy
(b) solar energy is converted into mechanical energy
(c) chemical energy is converted into mechanical energy
(d) bioenergy is converted into chemical energy
Ans. (а) solar energy is converted into chemical energy
Q 3 – The raw materials for photosynthesis are
(а) CO2
(b) CO2 , O2 , H2
(c) N2 water
(d) O2 water
Ans. (а) CO2
Q 4 – The tiny pores present in the leaves of the plants for exchange of gases are
called _____
(a) Stomata
(b) Tracheae
(c) Chloroplast
(d) Spiracles
Ans. (a) Stomata
Q 5 – Fungi is a
(a) parasite
(b) autotroph
(c) saprotroph
(d) insectivore
Ans. (c) saprotroph
Q 6 – Rhizobium is an example of
(a) Symbiosis
(b) Parasites
(c) Insectivorous
(d) none of these
Ans. (a) Symbiosis
Q 7 – Photosynthesis will not occur in leaves in the absence of
(a) guard cells
(b) chlorophyll
(c) vacuole
(d) space between cells
Ans. (b) chlorophyll
Q 8 – The end products of photosynthesis are
(a) carbohydrates, oxygen
(b) carbohydrates, hydrogen
(c) carbohydrates, water vapours
(d) carbohydrates, oxygen and water vapours
Ans. (a) carbohydrates, oxygen
Q 9 – Which part of the plant gets carbon dioxide from the air for photosynthesis?
(a) root hair
(b) stomata
(c) leaf veins
(d) sepals
Ans. (b) stomata
Q 10 – Which one of the following is a parasite?
(a) Lichen
(b) Cuscuta
(c) Pitcher plant
(d) Rhizobium
Ans. (b) Cuscuta
Q 11 – Which bacteria convert atmospheric nitrogen into soluble form?
(a) Rhizobium
(b) Spirillum
(c) Lactobacillus
(d) Methanogen
Ans. (a) Rhizobium
Q 12 – Iodine used to detect presence of starch. It gives starch
(a) red colour
(b) green colour
(c) blue-black colour
(d) colourless appearance
Ans. (c) blue-black colour
Q 13 – Chlorophyll is present inside the
(a) Stroma
(b) Thylakoids
(c) hypodermis
(d) granna
Ans. (b) Thylakoids
Q 14 – Which of the following class of organisms belongs to saprotrophs?
(a) Fungi
(b) Algae
(c) Lichens
(d) Bryophytes
Ans. (a) Fungi
Q 15 – Amarbel (Cuscuta) is an example of:
(a) autotroph
(b) parasite
(c) saprotroph
(d) host
Ans. (b) parasite
Q 16 – How does photosynthesis help to maintain the percentage of oxygen and carbon dioxide in the atmosphere?
(a) By giving off carbon dioxide and absorbing oxygen.
(b) By giving off oxygen and absorbing carbon dioxide.
(c) By releasing oxygen and carbon dioxide.
(d) By absorbing oxygen and carbon dioxide.
Ans. (b) By giving off oxygen and absorbing carbon dioxide.
Q 17 – The plant which traps and feeds on insects is:
(a) cuscuta
(b) china rose
(c) pitcher plant
(d) rose
Ans. (c) pitcher plant
Q 18 – Which one of the following is a pair of symbiotic organisms?
(a) Lichens
(b) Rhizobium and a legume
(c) None of these
(d) Both (a) and (b)
Ans. (d) Both (a) and (b)
Q 19 – Green plants use which of the following to prepare food?
(a) Carnon Di Oxide
(b) Sunlight
(c) Water
(d) All of these
Ans. (d) All of these
Q 20 – Ultimate source of energy for all living organisms is
(a) Planets
(b) Moon
(c) Sun
(d) Coal
Ans. (c) Sun
Q 21 – Which of the following is an insectivorous plant?
(a) Pitcher plant
(b) Indian telegraph plant
(c) 4 ‘O’clock plant
(d) Cuscuta
Ans. (a) Pitcher plant
Q 22 – 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
Ans. (c) Saprophytes are green.
Q 23 – Which of the following statements is true about croton plants?
(a) Croton plants do not contain chlorophyll.
(b) Croton plants are dark red in colour. Hence they depend on other plants for food.
(c) Croton plants have chlorophyll but it is hidden by dark red colour pigments.
(d) Croton plants are parasites.
Ans. (c) Croton plants have chlorophyll but it is hidden by dark red colour pigments.
Q 24 – 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
Ans. (a) To prepare food
Q 25 – Match the following
| Column A | Column B |
| (i) Autotrophs | (a) Fungi |
| (ii) Heterotroph | (b) Lichen |
| (iii) Parasite | (c) Pitcher plant |
| (iv) Saproptroph | (d) Algae |
| (v) Symbiont | (e) Man |
| (vi) Insectivorous | (f) Cuscuta |
Ans.
| Column A | Column B |
| (i) Autotrophs | (d) Algae |
| (ii) Heterotroph | (e) Man |
| (iii) Parasite | (f) Cuscuta |
| (iv) Saproptroph | (a) Fungi |
| (v) Symbiont | (b) Lichen |
| (vi) Insectivorous | (c) Pitcher plant |
Q 26 – Fill in the blanks:
(a) All organisms take food and utilize it to get energy for the growth and the maintenance of their bodies.
(b) Green plants synthesise their food themselves by the process of photosynthesis they are called autotrophs
(c) Solar energy is stored by the leaves with the help of chlorophyll.
(d) Fungi/s aprotrophs derive nutrition from, dead, decaying matter.
(e) Plants like cuscuta take food from host plant.
(f) All animals are categorised as heterotrophs
(g) Oxygen is produced and carbon dioxide is utilized during photosynthesis.
(h) Chlorophyll is the site of reception of light energy in leaves.
Q 27 – Which of the following is a nutrient?
(a) Protein
(b) Fat
(c) Vitamin
(d) All of these
Ans. (d) All of these
Q 28 – What is the role of the bacteria in leguminous plants?
(a) Convert oxides of nitrogen into soil nitrates.
(b) Convert atmospheric nitrogen gas into soil nitrates.
(c) Convert soil nitrates into gaseous nitrogen.
(d) Convert plant proteins into ammonia.
Ans. (b) Convert atmospheric nitrogen gas into soil nitrates.
Q 29 – Human beings can be categorised as
(a) heterotrophs
(b) autotrophs
(c) parasites
(d) saprotrophs
Ans. (a) heterotrophs
Q 30 – Which of the following is not an insectivorous plant ?
(a) Monotropa
(b) Drosera
(c) Utricularia
(d) Nepenthes
Ans. (a) Monotropa
Q 31 – Which of the following, one element has not been proven to be essential in plants
(a) Potassium
(b) Sodium
(c) Zinc
(d) Iron
Ans. (b) Sodium
Q 32 – The food-making process in plants is called as
(a) glycolysis
(b) photosynthesis
(c) photolysis
(d) chemosynthesis
Ans. (b) photosynthesis
Q 33 – Which one is saprophytic organism?
(a) Algae
(b) Mushroom
(c) Cuscuta
(d) Mango
Ans. (b) Mushroom
Q 34 – Which part of the plant is called its food factory ?
(a) Fruits
(b) Seeds
(c) Leaves
(d) Flowers
Ans. (c) Leaves
Q 35 – Organism that live and derive food from others are called
(a) Autotrophs
(b) Host
(c) Parasite
(d) Carnivores
Ans. (c) Parasite
Q 36 – Tiny pores present on the surface of leaves through which gaseous exchange occurs are called
(a) stomata
(b) guard cells
(c) food holes
(d) gas holes
Ans. (a) stomata
Q 37 – During photosynthesis plants
(a) take oxygen and release carbon dioxide
(b) take carbon dioxide and release oxygen
(c) take carbon dioxide but do not release oxygen
(d) take oxygen but do not release carbon dioxide
Ans. (b) take carbon dioxide and release oxygen
Q 38 – What is the ultimate source of energy for all living organisms?
(a) Water energy
(b) Wind energy
(c) Solar energy
(d) Chemical energy
Ans. (c) Solar energy
Q 39 – Green pigment present in the leaves is called
(a) haemoglobin
(b) globulin
(c) albumin
(d) chlorophyll
Ans. (d) chlorophyll