Questions
_______________ is a green pigment that helps to capture the energy of sunlight for photosynthesis.
- Chlorophyll
- Sepal
- Cytoplasm
- Stoma
- Pistil
Water and minerals are transported in plants by the vessels that run like pipes throughout the
- roots
- roots and stems
- roots, stems and branches
- branches and leaves
- roots, stems, branches and leaves
Which of the following is not necessary for carrying out the process of photosynthesis?
- Sunlight
- Chlorophyll
- Oxygen
- Carbon dioxide
- Water
The plants that trap insects and digest them by producing digestive juices are called insectivorous plants. Which of the following are insectivorous plants?
a. Cuscuta
b. Pitcher plant
c. Sundew
d. Algae
- Only b and d
- Only a and c
- Only b and c
- Only c and d
- Only a and b
Which of the following is/are the end product(s) in the process of photosynthesis?
a. Carbohydrates
b. Carbon dioxide
c. Oxygen
- Both a and b
- Only a
- Both a and c
- Both b and c
- Only c
Which of the following solutions is used to test the presence of starch in leaves?
- Iodine solution
- Alcohol solution
- Benzene solution
- Sodium solution
- Hydrochloric acid solution
Which of the following statements is/are false?
a. The mode of nutrition in humans and other animals is autotrophic.
b. A type of relationship between organisms in which both the partners are benefitted by each other is called symbiotic relationship.
c. Food provides energy for movements, such as running, walking or raising of arms.
- Only a
- Only a and b
- Only b
- Only b and c
- Only c
Which of the following statements is/are false?
a. Insectivorous plants can carry out photosynthesis, but they cannot obtain nitrogen-rich substances from the soil.
b. Algae are green in colour due to the presence of chlorophyll.
c. An organism that provides nutrients to another organism without being benefitted is called a heterotroph.
- Only a
- Both a and b
- Only b
- Only b and c
- Only c
Amarbel is an example of
- hosts
- algae
- saprotrophs
- autotrophs
- parasites
____ are the ‘food factories’ of plants.
- Roots
- Leaves
- Stems
- Flowers
- Stomata
Which of the following statements is/are false?
a. Nutrition is the mode of intake of food by an organism and its utilisation by the body.
b. The mode of nutrition in which organisms make food for themselves from complex organic substances is called autotrophic nutrition.
c. The cell is enclosed by the cell membrane that surrounds a jelly-like substance called cytoplasm.
- Only a
- Both a and b
- Only b
- Only b and c
- Only c
Which of the following elements constitute carbohydrates?
a. Oxygen
b. Carbon dioxide
c. Hydrogen
d. Nitrogen
- Both a and b
- Both b and c
- Both c and d
- Both a and c
- Both b and d
Which of the following organisms convert atmospheric nitrogen into a soluble form?
- Algae
- Lichens
- Lice
- Rhizobium
- Rose plants
The organisms that get nutrients in solution form from the dead and decaying matter are called saprotrophs. Which of the following is/are saprotroph(s)?
- Mushroom
- Cynobacteria
- Algae
- Lice
- Mosquitoes
Which of the following statements is/are false?
a. Autotrophs prepare their own food by a process called photosynthesis.
b. Hetrotrophic nutrition is a type of nutrition in which energy is derived from the intake and digestion of organic substances.
c. Photosynthesis takes place in the spines of desert plants like cacti.
- Only a
- Both a and b
- Only b
- Both b and c
- Only c