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CBSE Class 10 Life Processes in Living Organisms Part 2 — practice questions — page 3

Explore 129 free Life Processes in Living Organisms Part 2 questions in CBSE 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 61–90 of 129.

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 →Pollination by wind tends to produce flowers that are:Read the answer and worked solution →Fission divides the parent cell into two equal halves, whereas multiple fission divides it into:Read the answer and worked solution →Which of the following is NOT a method of contraception?Read the answer and worked solution →A flower that has both stamens and pistils is called:Read the answer and worked solution →The structural and functional unit of the nervous system is the:Read the answer and worked solution →A reflex action is best described as:Read the answer and worked solution →The portion of the brain that controls balance and coordination of body movements is the:Read the answer and worked solution →The hormone produced by the pancreas that lowers blood glucose level is:Read the answer and worked solution →Thyroxine, which regulates the metabolic rate of the body, is produced by the:Read the answer and worked solution →The 'master gland' that controls many other endocrine glands is the:Read the answer and worked solution →Adrenaline (epinephrine), the fight-or-flight hormone, is produced by the:Read the answer and worked solution →Phototropism is the:Read the answer and worked solution →Auxin is a plant hormone that mainly promotes:Read the answer and worked solution →The gap between two neurons across which a nerve impulse is transmitted (chemically) is the:Read the answer and worked solution →Geotropism shown by the roots of a plant is:Read the answer and worked solution →The number of pairs of cranial nerves in humans is:Read the answer and worked solution →The hormone that controls the level of sugar in blood by promoting glucose uptake by cells is:Read the answer and worked solution →Plants RESPOND to stimuli mainly through:Read the answer and worked solution →The IODINE-containing hormone is:Read 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 →Asexual or sexual reproduction?Read the answer and worked solution →Match each organism to how it reproducesRead 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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