CBSE Class 10 Biology Life Processes Worksheet Set C

 

 

Transportation in plants :-
* Xylem transport transport water and minerals . It occurs due to transpiration pull and root pressure.
* Phloem transport the food by using energy ( translocation ) .

 

EXCRETION
Unicellular animals excrete through their body surface ( diffusion ).
Nephrons are structural and functional units of kidneys .
Formation of urine :- it involves three stages
* Ultra filtration in glomerulus .
* Selective reabsorption of useful substances
* tubular secretion

 

 

Excretion in plants
Gaseous waste products are excreted through stomata and lenticels.
Liquid waste products ( water , gums resins etc ) are excreted through stomata or hydathodes.
Solid waste products are stored in cellular vacuoles . plants get rid of them by falling their leaves .

 

 

Question. Large intestine in man mainly carries out
(a) absorption
(b) assimilation
(c) digestion of fats
(d) digestion of carbohydrates

Answer : A

Question. In which mode of nutrition an organism de-rives its food from the body of another living organism without killing it?
(a) Saprotrophic nutrition
(b) Parasitic nutrition
(c) Holozoic nutrition
(d) Autotrophic nutrition

Answer : B

Question. A gland not associated with the alimentary canal is
(a) liver
(b) salivary glands
(c) pancreas
(d) adrenal

Answer : D

Question. The site of photosynthesis in the cells of a leaf is
(a) chloroplast
(b) mitochondria
(c) cytoplasm
(d) protoplasm

Answer : A

Question. The unit of kidney is called
(a) Bowman’s capsule
(b) glomerulus
(c) nephron
(d) collecting tubule

Answer : C

Question. Which is not the function of kidney?
(a) Synthesis of urea
(b) Excretion of urea
(c) Reabsorption of water
(d) Secretion

Answer : A

Question. If the loop of Henle is abolished
(a) tubular secretion will not take place
(b) bile will not be excreted
(c) water content in urine would be higher
(d) uric acid will not be excreted

Answer : C

Question. Correct route of the passage of urine is
(a) collecting tubule—ureter—urinary bladder—urethra
(b) convoluted tubule—loop of Henle—urinary bladder
(c) ureter—urethra—urinary bladder
(d) urethra—urinary bladder—ureter

Answer : A

Question. Where does the pelvis of kidney lie?
(a) In cortex
(b) In medulla
(c) In ureter
(d) In urinary bladder

Answer : B

Question. Which of the following is/are correct about heart?
(a) Left ventricle receives pure blood.
(b) Right ventricle pumps impure blood.
(c) Left atrium has thicker wall than the right ventricle.
(d) Right atrium opens into the left ventricle.

Answer : A

Question. Mammalian kidney is
(a) oval
(b) cylindrical
(c) bean shaped
(d) trilobed

Answer : C

True and False :

Question. The release of energy in aerobic process is less than in anaerobic process. 
Answer : False

Question. Before testing for starch, chlorophyll has to be removed from the leaf as it interferes in the test for starch due to its green colour. 
Answer : True

Question. The respiration in plants occurs at a fast rate whereas the respiration in animals occur at a much slower rate. 
Answer : False

Question. The process in which the absorbed food is taken in by body cells and used for energy, growth and repair is called egestion.
Answer : False

Question. The length of small intestine in a human adult is about 3.5 m.
Answer : False

Question. Lymph and plasma have the same chemical composition.
Answer : True

Question. Distal convoluted tubule opens in the loop of Henle.
Answer : False

Question. Filtrate is hypotonic in proximal tubule.
Answer : True

Question. Kidney produces RBC.
Answer : False

Question. Blood capillaries are lined with cuboidal cells.
Answer : False

Question. Afferent arteriole brings blood to the nephron.
Answer : True

Fill in the Blanks :

Question. ………. is the longest part of the alimentary canal.
Answer: Small intestine

Question. The process in which the digested food passes through the intestinal wall into blood stream is called ________ .
Answer: absorption

Question. The teeth covered with a sticky, yellowish layer of food particles and bacteria is called _____________ .
Answer: plaque

Question. The blood has ………. cells which plug the leakage in the vessels by helping to clot the blood at the point of injury.
Answer: platelet

Question. ………. transports products of photosynthesis from the leaves to other parts of the plant.
Answer: phloem

Question. Iodine turns blue-black on reacting with _____________ .
Answer: starch

Question. The energy produced during respiration is stored in the form of ATP which stands for _____________ .
Answer: Adenosine Tri-phosphate

Question. Pyruric acid is a three carbon compound which is also known as _____________ .
Answer: pyruvate

Question. Rings of cartilage are present in the wind pipe to ensure that the ………. .
Answer: air-passage does not collapse

Question. ………. is the site of the complete digestion of carbohydrates, proteins and fats.
Answer: Small intestine

Question. Heart of fish pumps ...... blood, whereas the heart of bird pumps ...... blood.
Answer: deoxygenated, oxygenated

Question. The unit of kidney is called ...... .
Answer: nephron

Question. The duct that emerges from kidney is called ...... .
Answer: ureter

Question. The dialyser works as kidney except ...... .
Answer: selective absorption

Question. Heart is largely composed of ...... muscles.
Answer: cardiac

Question. The bunch of blood capillary in nephron is called ...... .
Answer: glomerulus

Question. Valves prevent ...... flow of blood and are also present in ...... .
Answer: back, heart

                 A                               B

(i) Right atrium                      (a) Oscilloscope screen
(ii) ECG                                 (b) Amphibia
(iii) Auricle                            (c) Vena cava
(iv) Three-chambered heart    (d) Fish
(v) Two-chambered heart       (e) Atria


Answer: (i)(c)  (ii)(a)  (iii)(e)  (iv)(b)  (v)(d)

Important Questions for NCERT Class 10 Science Life Processes