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Karnataka SSLC (Class 10) Life Processes in Living Organisms Part 2 — practice questions — page 3

Explore 83 free Life Processes in Living Organisms Part 2 questions in Karnataka SSLC (Class 10) Science. Open each question or exercise to read its content, reference answers and available explanation.

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Life Processes in Living Organisms Part 2 questions and exercises with answers

Showing questions 61–83 of 83.

A barrier method of contraception is the:Read the answer and worked solution →Hormonal contraceptive pills act primarily by:Read the answer and worked solution →Which of the following is a sexually transmitted bacterial disease?Read the answer and worked solution →In an angiosperm, the haploid cell that fuses with the egg to form the zygote is the:Read the answer and worked solution →The basic structural and functional unit of the nervous system is theRead the answer and worked solution →The microscopic gap across which a nerve impulse passes from one neuron to the next is theRead the answer and worked solution →A sudden, automatic response to a stimulus, such as pulling the hand off a hot object, is calledRead the answer and worked solution →Receptors that detect smell are calledRead the answer and worked solution →A reflex action is controlled mainly by theRead the answer and worked solution →The part of the human brain that controls balance and posture is theRead the answer and worked solution →Involuntary actions such as heartbeat and breathing are controlled by theRead the answer and worked solution →The hormone that lowers the level of sugar in the blood isRead the answer and worked solution →The 'fight-or-flight' hormone secreted during fear or excitement isRead the answer and worked solution →The bending of a plant shoot towards light is an example ofRead the answer and worked solution →The plant hormone responsible for cell elongation and growth isRead the answer and worked solution →Deficiency of iodine in the diet can cause the thyroid disorder calledRead the answer and worked solution →A nerve impulse travels along a neuron as an electrical signal but crosses a synapse as aRead the answer and worked solution →Hormones are secreted by endocrine glands directly into theRead the answer and worked solution →Order the path of a reflex actionRead the answer and worked solution →Match each plant response to its nameRead the answer and worked solution →Which part of the brain does the job?Read the answer and worked solution →Tap every plant hormoneRead the answer and worked solution →True or false: control and coordinationRead the answer and worked solution →

Worked practice questions

A barrier method of contraception is the:

  1. Tubectomy
  2. Oral contraceptive pill
  3. Copper-T (IUCD)
  4. Condom
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Correct answer: D. Condom

1. Barrier methods physically prevent sperm from meeting the egg. 2. Condom (and diaphragm) are the standard barrier devices. 3. Pills act hormonally; Copper-T acts intra-uterine; tubectomy is surgical. _Source: syllabus Science, Ch 7 "How do Organisms Reproduce", §7.3.4_

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Hormonal contraceptive pills act primarily by:

  1. Suppressing ovulation
  2. Killing sperm in the uterus
  3. Blocking the fallopian tube physically
  4. Removing the uterine lining
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Correct answer: A. Suppressing ovulation

1. Oral pills contain oestrogen and progesterone analogues. 2. These suppress the LH surge that triggers ovulation. 3. Without ovulation, no egg is released and pregnancy cannot occur. _Source: syllabus Science, Ch 7 "How do Organisms Reproduce", §7.3.4_

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Which of the following is a sexually transmitted bacterial disease?

  1. AIDS
  2. Syphilis
  3. Genital herpes
  4. Hepatitis B
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Correct answer: B. Syphilis

1. Syphilis is caused by the bacterium Treponema pallidum. 2. AIDS (HIV), genital herpes (HSV) and Hepatitis B are viral. 3. Hence syphilis is the bacterial entry in this list. _Source: syllabus Science, Ch 7 "How do Organisms Reproduce", §7.3.4_

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