CBSE Class 8 Science Cell Structure and Functions Worksheet Set B

Question. What are antibodies?
(a) Germs that damage our bodies
(b) Molecules that help destroy foreign cells
(c) Cells that are used in blood transfusion
(d) Agents used in cross-matching of blood

Answer : B

Question. If a patient whose blood group is A- is given blood of group B-, what will happen?
(a) There will be no problem - his body will accept the blood.
(b) There may be a serious reaction as his body will not accept the blood.
(c) His blood group will change to AB-.
(d) It is not possible to predict - any of the above may occur.

Answer : B

Question. ______ : AMOEBA as  FEET : MAN
(a) TENTACLES
(b) CILIA
(c) PSEUDOPODIA
(d) FLAGELLA

Answer : C

Question. The water that is absorbed by the roots reaches different parts of the plant through the
(a) xylem
(b) phloem
(c) parenchyma
(d) cambium

Answer : A

Question. Which of the following is the correct representation of the cellular organization from the simplest to the most complex?<

(a) A
(b) B
(c) C
(d) D

Answer : C

Question. In the picture below which shows an arm being extended, P and Q respectively denote_______.

(a) relaxed biceps and contracting triceps
(b) contracting biceps and relaxed triceps
(c) contracting biceps and contracting triceps
(d) relaxed biceps and relaxed triceps

Answer : A

Question. In general, how does the size of the cells of an animal relate to the animals size?
(a) It is directly proportional to the size of the animal.
(b) It is inversely proportional to the size of the animal.
(c) It is almost the same irrespective of the size of the animal.
(d) The smallest and largest animals have larger cells than others.

Answer : C

Question. When a cell was examined under a microscope, it was found that it did not have a cell wall.  Which of these is also likely to be missing from the cell?
(a) Nucleus
(b) Mitochondrion
(c) Chloroplasts
(d) Vacuole

Answer : C

Question. What is the probable relationship between an animal's size and its blood pressure?
The question is based on this table.

(a) Larger animals have a higher blood pressure.
(b) Smaller animals have a higher blood pressure.
(c) There is no connection between an animal's size and its blood pressure.
(d) Smallest and largest animals have the highest blood pressure.

Answer : C

Question. According to the table, the blood pressure is measured in 'mm Hg'. Hg refers to
The question is based on this table.

(a) Water
(b) Mercury
(c) High
(d) Heavy Gush

Answer : B

Question. The chart below shows the rate of heartbeat of different animals. Their weights are also given.
From the chart, which of these appears to be the relationship between the weight of an animal and its average heart rate?

(a) The average heart rate of the heavier animals is more.
(b) The average heart rate of the heavier animals is less.
(c) The average heart rate of the light and heavy animals is less than that of the other animals.
(d) There is no relationship between the weight of an animal and its average heart rate.

Answer : B

Question. When a person's blood pressure is measured, two readings are obtained - the Systolic and the Diastolic. These two numbers are used to determine if the person has high blood pressure (hypertension).
The blood pressure readings of 4 patients is given below. Which of them is suffering from Stage 1 Hypertension?

(a) A
(b) B
(c) C
(d) D

Answer : C

Question. During a health camp in a school, the visiting dentist asks a group of four class 8 students to name the teeth from the back of the mouth to the front in definite order as seen in the segment marked with a rectangle. He got 4 different answers. Identify which one is the correct order

(a) 2-Incisors,
1-Canine, 
3-Premolars, 
2-Molars
(b) 2-Molars, 
3-Premolars, 
2-Canines, 
1-Incisor
(c) 3-Incisors, 
2-Canines, 
1-Molar, 
2-Premolars
(d) 3-Molars, 
2-Premolars, 
1-Canine, 
2-Incisors

Answer : D

Question. Three of the four organs mentioned here belong to a particular organ system in the human body. Find the organ that is the odd one out.
(a) liver
(b) kidneys
(c) pancreas
(d) small intestines

Answer : B

Question. During digestion, the proteins in the food will be broken down into______.
(a) amino acids
(b) amino acids
(c) uric acid
(d) nucleic acids

Answer : B

              Questions

              Very Short Answer

Q1)       What is nucleus?

Q2)       Define tissues?

Q3)       What are prokaryotes?

Q4)       Define chloroplasts?

Q5)       What are eukaryotes?

             Short Answer

Q6)       What do you mean by gene?

Q7)       Distinguish between prokaryotic cells and eukaryotic cells?

Q8)       What is pseudopodia and how it works?

Q9)       How plasma membrane is different from nuclear membrane?

Q10)     Define plastid and organelles?

             Long Answer

 Q11)     Distinguish between cell wall and cell membrane?

Q12)     Write short note on nucleus?

Q13)     What are the comparison between animal cell and plant cell?

Q14)     Write short note on chromosome?

Q15)     State the difference between cell and tissues?