Life Processes MCQ Questions Class 10 Science Chapter 6
NCERT MCQ Questions for Class 10 Science Chapter 6 Life Processes. Life Processes MCQ Questions with Answers from Class 10 Science.
Life Processes MCQ Questions Class 10 Science Chapter 6
Life Processes Multiple Choice Questions with Answers Class 10 Science Chapter 6 PDF is available.
1) Life processes essential for living organisms are ____.
a) nutrition b) digestion c) circulation d) all of these.
Ans. d)
Explanation: Nutrition, digestion and circulation are important for all the living organisms to maintain their life cycle.
2) The intake of all forms of food and nutrients in normal quantity and absorption of the nutrients in the body is termed as _____.
a) reproduction b) nutrition c) metabolism d) transportation
Ans. b)
Explanation: Absorption of nutrients help in the maintaining the body health.
3) Which are the components not necessary for photosynthesis?
a) water b) oxygen c) soil d) chlorophyll
Ans. c)
Explanation: Water, oxygen and soil and chlorophyll are essential for plants to make their own food.
4) From the options given below which comes under the category of heterotrophic nutrition?
a) Animals b) Humans c) both a and b d) Plants
Ans. c)
Explanation: Animals and Humans depend upon others for their food so they are called heterotrophs.
5) The organisms which eat both plants and animals are called ___
a) herbivore b) carnivore c) omnivore d) heterotroph
Ans. c)
Explanation: The organism which eat both plants and animals are called omnivores.
6) How many carbon atoms are present in glucose?
a) 6 b) 12 c) 4 d) 1
Ans. a)
Explanation: The formula of glucose is C6H12O6.
7) Light reactions are carried out in the presence of ____.
a) Carbon dioxide b) Oxygen c) light d) dark
Ans. c)
Explanation: Light reactions are carried out in the presence of light which helps in performing photosynthesis.
8) The mode of nutrition in fungus is _____.
a) autotrophic b) saprophytic c) holozoic d) Parasitic
Ans. b)
Explanation: Fungus depends on the dead decaying matter for their nutrition so they are called saprophytic.
9) Humans follow which type of nutrition?
a) autotrophic b) holozoic c) parasitic d) saprophytic
Ans. b)
Explanation: In humans, the nutrition absorption takes place entirely inside the body so humans follow holozoic nutrition.
10) Name the last step in the process of holozoic nutrition?
a) Egestion b) Ingestion c) Assimilation d) Absorption
Ans. a)
Explanation: Egestion is the process in which the waste products are expelled out from the body.
11) The pharynx present in the digestive tract is also known as ___
a) mouth b) throat c) salivary gland d) food pipe
Ans. b)
Ans. The pharynx is also known as the throat.
12) What is the function of intestine?
a) it passes the food and drink to the next part.
b) it acts as a blender to churn the food.
c) it is the site for digestion and absorption of food.
d) Both a and b
Ans. c)
Ans. In the intestines, the food is digested completely and absorbed.
In case you are missed :- Previous Chapter MCQ Questions
13) The digestive tract starts with mouth and ends on _____.
a) anus b) small intestine c) large intestine d) rectum
Ans. a)
Explanation: The digestive tract starts with the mouth and ends on anus as the waste is expelled from the anus.
14) Each kidney weighs about ______.
a) 120 – 135 gm b) 130- 160 gm c) 100 – 125 gm d) 150 – 170 gm
Ans. d)
Explanation: Each kidney weighs around 150 -170 gm in weight and are the part of the excretory system.
15) “To maintain homeostasis” is the function of ____ system.
a) Excretory system
b) Circulatory system
c) Lymphatic system
d) Digestive system
Ans. a)
Explanation: Excretory system helps in regulating blood pressure.
16) ___ organ is present in the left abdominal cavity.
a) Lymph b) thymus c) bone marrow d) spleen
Ans. d)
Explanation: Spleen is an organ situated in the left abdominal cavity which helps to prevent infection.
17) B cells which help in antibody formation are present in ___.
a) spleen b) bone marrow c) blood d) none of these
Ans. b)
Explanation: Bone marrow contains B cells which help in making antibodies to fight against infection.
18) Complete the equation of respiration in plants
C6H12O6 + 6O2 —–> ____ + 6CO2 + energy
a) 4H2O b) 2H2O c) 6H2O d) H2O
Ans. c)
Explanation: Glucose is broken down in presence of oxygen which leads to the formation 6 molecules of water carbon dioxide and releases energy.
19) How do aquatic animals breathe?
a) through air
b) with the help of gills
c) using dissolved oxygen in water
d) both b and c
Ans. d)
Explanation: As aquatic plants live in water they need to use the dissolved oxygen in water and breathe through gills.
20) The percentage of nitrogen present in air is ____.
a) 72% b) 77% c) 78% d) 70 %
Ans. c)
Explanation: The amount of nitrogen content is highest in the air i.e. 78%.
21) The dome shaped organ in the respiratory system is___.
a) diaphragm b) lungs c) pharynx d) alveoli
Ans. a)
Explanation: The diaphragm is the partition between the respiratory and digestive system.
22) _____ provides the actual area for exchange of gases in the respiratory system.
a) lungs b) pharynx c) larynx d) alveoli
Ans. d)
Explanation: Within the alveoli the oxygen exchange with carbon dioxide.
23) The normal life span of Red blood cells is____.
a) 130 days b) 12 hours c) 120 days d) 5 to 10 days
Explanation. c) The normal life span of RBC is 120 days after which they regenerate.
24) The tissues which are responsible for transport of food in plants.
a) xylem b) phloem c) both a and b d) none of these
Explanation: Xylem conducts water whereas phloem conducts food for the plants.
25) WBC’s are also called as _____
a) erythrocytes b) leucocytes c) thrombocytes d) platelets
Ans. b)
Explanation: WBC’s are also called leucocytes and they help the body to fight against the diseases.
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