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Consider the following statements regarding the significance of mitosis and choose the correct answer:
1. The constant number of chromosomes in all the cells of the body is because of mitosis
2. Mitosis restores the surface-volume ratio of the cell
3. A cell can grow in size to a large extent without disturbing the ratio between the nucleus and the cytoplasm
4. Repair of the body takes place because of addition of cells by mitosis
From the given table, what is the percentage of students scoring 40 or more, but less than 70. Scores Less than 20 Less than 30 Less than 40 Less than 50 Less than 60 Less than 70 Less than 80 No. of Students 12 19 22 31 38 46 50
Column A lists the cell parts and Column B lists the functions of the cell part. Column A Column B i. Cell wall A. Control what happens ii. Cell membrane B. Supports the cell. iii. Cytoplasm C. Controls what passes in and out of the cell. iv. Nucleus D. Cell reactions happen in it. Which one of the following options is correct?
From the following table, how many patients were in the age group 40 – 60? Age (years) Less than 10 Less than 20 Less than 30 Less than 40 Less than 50 Less than 60 Less than 70 No. of patients 11 15 22 29 35 45 50
The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph. P: Classical conditioning theory involves learning a new behaviour via the process of association. Q: In simple terms, two stimuli are linked together to produce a newly learned response in a person or animal. R: There are three stages of classical conditioning. S: At each stage, the stimuli and responses are given special scientific terms.
Learning which involves the act to differentiate between stimuli and showing an appropriate response to these stimuli is called
Consider the following statements
1. The bundled axons of the ganglion cells from both the eyes, first travel to the base of the brain and come together in the optic chiasma
2. At the optic chiasma stimuli from the left visual field are sent to the right occipital lobe for further processing
3. Stimuli from the right visual field are sent to the left occipital lobe
Select the correct answer from the options given below:
During a medical check-up, the heights of 40 students in a class were recorded as shown in the following table. Height (in cm) Less than 175 Less than 170 Less than 165 Less than 160 Less than 155 Less than 150 Number of students 40 35 25 16 8 4   How many students have a height of 165 cm or more?
Which of the following statement/s is/are true for a Prokaryotic Cell? i) They don’t have a nucleus. ii) The cell division takes place by Mitosis and Meiosis. ii) Membrane bound cell organelles are present.
Study the table and answer the question. The table shows the daily income of 50 persons. Income (Rs.) No. of persons less than 200 12 less than 250 26 less than 300 34 less than 350 40 less than 400 50 How many persons earn Rs.250 or more but less than Rs.350 daily?