Life Processes
Covers key life processes including nutrition, respiration, digestion, and transportation in plants and animals
Questions
Which of the following exhibit(s) saprophytic mode of nutrition?
- Tapeworm
- Green plants
- Amoeba
- Bacteria
- Leech
_______ is the process in which digested food is broken down with the help of oxygen to release energy.
- Nutrition
- Excretion
- Respiration
- Transportation
- Reproduction
Which of the following steps is not included in holozoic nutrition?
- Ingestion
- Excretion
- Digestion
- Absorption
- Assimilation
Digestion of food material ingested by a man does not take place in
- mouth
- large intestine
- stomach
- small intestine
- none of these
Which process is used for expelling out the undigested food?
- Ingestion
- Assimilation
- Egestion
- Excretion
- Digestion
What is the role of hydrochloric acid in human body?
- Digestion of proteins
- Killing of harmful bacteria
- Protection of the inner lining of the stomach
- Breakdown of large fats
- Conversion of carbohydrates to glucose
Which of the following is not a reason due to which multicellular organisms need more oxygen than unicellular organisms?
- The rate of respiration is much higher in multicellular organisms than in unicellular organisms.
- Multicellular organisms are made of billions of cells.
- Cells are not directly in contact with the environment or air.
- In blood, oxygen is slowly taken up by haemoglobin.
- The absorbed oxygen is rapidly transported to all the cells.
Which of the following enzymes is related to saliva?
- Catalase
- Amylase
- Lipase
- Pepsin
- Trypsin
How many heart chambers are present in fish?
- 13
- 5
- 3
- 2
- 4
Which of the following raw materials is not necessary for the process of photosynthesis?
- Sunlight
- Water
- Chlorophyll
- Carbon dioxide
- Soil
______ is the process in which movement of molecules from one region to another in accordance to concentration gradient takes place.
- Osmosis
- Transportation
- Diffusion
- Translocation
- Circulation
Which of the following characteristics is related to the complex tissue xylem?
- It has only one type of dead cells.
- It is a complex tissue which transports sap.
- Conduction is inhibited by heat.
- Transport takes place due to the presence of positive pressure.
- It is a complex tissue which takes part in transport of food.
The inner wall of small intestine has many finger-like structures called
- villi
- capillaries
- rings of cartilage
- arteries
- veins
Which component of transport system in human beings carries blood towards the heart?
- Arteries
- Blood platelets
- Lymph
- Veins
- Capillaries
Which of the following is not a function of blood?
- Maintenance of water balance
- Transport of food
- Chemical coordination
- Cutting and tearing solid food into small pieces
- Maintenance of pH