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AP Biology Unit 8J: Comparative Physiology: Transport & Regulation — practice questions

Explore 73 free Unit 8J: Comparative Physiology: Transport & Regulation questions in AP Biology Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Unit 8J: Comparative Physiology: Transport & Regulation questions and exercises with answers

Showing questions 1–30 of 73.

Which feature is a characteristic drawback of asexual reproduction?Read the answer and worked solution →Which protist reproduces by transverse binary fission?Read the answer and worked solution →Which axis of binary fission is correctly matched with its protist?Read the answer and worked solution →Which unicellular organism reproduces asexually by budding?Read the answer and worked solution →In which pair of organisms does asexual reproduction occur by fragmentation?Read the answer and worked solution →A wall lizard regrows part of its discarded tail after some time. This ability is an example of:Read the answer and worked solution →When a Planaria is cut into two parts, each part forms a complete new Planaria. This process is called:Read the answer and worked solution →In Hydra, the bud growing on its body wall is formed by repeated division of which cells?Read the answer and worked solution →In which plant does vegetative propagation occur through buds on the leaf margin?Read the answer and worked solution →Why does an offspring of sexual reproduction show some characters different from both parents?Read the answer and worked solution →Which two floral whorls are called the 'essential whorls' of a flower?Read the answer and worked solution →A flower that bears only the androecium and lacks the gynoecium is called a:Read the answer and worked solution →In double fertilization, the second male gamete fuses with the two polar nuclei to form the:Read the answer and worked solution →Pollination between two flowers borne on two different plants of the same species is called:Read the answer and worked solution →After fertilization in a flowering plant, the ovule and the ovary develop respectively into the:Read the answer and worked solution →Where does fertilization normally take place in the human female reproductive system?Read the answer and worked solution →The stoppage of functioning of the female reproductive system at about 45–50 years of age is called:Read the answer and worked solution →Which combination of sex chromosomes is found in the two kinds of human sperms?Read the answer and worked solution →In human sex determination, the sex of a child is decided by the chromosome contributed by the:Read the answer and worked solution →Which organ forms in the uterus to supply food material to the developing embryo?Read the answer and worked solution →In the menstrual cycle, the bursting of the mature follicle to release the oocyte is triggered by which hormone?Read the answer and worked solution →After ovulation, the remaining tissue of the burst follicle forms the corpus luteum, which secretes:Read the answer and worked solution →In the IVF technique, where is fertilization brought about?Read the answer and worked solution →In surrogacy, the woman in whose uterus the couple's embryo is implanted is called the:Read the answer and worked solution →Monozygotic twins arise from a single embryo whose cells divide into two groups within about how many days of zygote formation?Read the answer and worked solution →Which statement about dizygotic twins is correct?Read the answer and worked solution →Syphilis and gonorrhoea, two common sexually transmitted diseases, are caused by:Read the answer and worked solution →A reflex action involves:Read the answer and worked solution →The basic unit of the nervous system is the:Read the answer and worked solution →The plant hormone responsible for phototropism is:Read the answer and worked solution →

Worked practice questions

Which feature is a characteristic drawback of asexual reproduction?

  1. It needs two parents to occur
  2. It is a very slow process
  3. It lacks genetic recombination
  4. It always produces haploid cells
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Correct answer: C. It lacks genetic recombination

1. Asexual reproduction involves no union of gametes, so it is uniparental and uses mitosis. 2. With one parent only, genes are not recombined, so offspring are genetically identical. 3. Absence of recombination is its drawback; being fast is its advantage. 4. Needing two parents and being slow describe sexual reproduction, so those are ruled out. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 3 "Life Processes in Living Organisms Part 2", p.31_

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Which protist reproduces by transverse binary fission?

  1. Amoeba
  2. Euglena
  3. Paramecium
  4. Spirogyra
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Correct answer: C. Paramecium

1. The plane of binary fission differs among protists. 2. Amoeba divides in any plane (simple fission) because it lacks a fixed shape. 3. Euglena divides longitudinally, so it is ruled out. 4. Paramecium divides across its body, which is transverse binary fission. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 3 "Life Processes in Living Organisms Part 2", p.32_

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Which axis of binary fission is correctly matched with its protist?

  1. Amoeba is fixed transverse only
  2. Paramecium is longitudinal fission
  3. Euglena is simple any-plane fission
  4. Euglena is longitudinal fission
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Correct answer: D. Euglena is longitudinal fission

1. The plane of fission is set by each protist's body shape. 2. Amoeba has no fixed shape, so it splits in any plane (simple fission). 3. Therefore claiming Amoeba is fixed-transverse makes option A wrong. 4. Paramecium splits across its body (transverse), so calling it longitudinal makes B wrong. 5. Euglena splits lengthwise (longitudinal), so labelling it any-plane makes C wrong. 6. Only the Euglena-longitudinal match in D is correct. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 3 "Life Processes in Living Organisms Part 2", p.32_

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More Biology topics

Unit 5C: Non-Mendelian Genetics & Population TransmissionUnit 2B: Membrane Transport, Tonicity & Cell SizeUnit 8K: Human Organ Systems & HomeostasisUnit 3B: Photosynthesis, Respiration & Cellular EnergyUnit 7B: Population Genetics & Hardy-Weinberg EvolutionUnit 2G: Osmoregulation & Membrane DynamicsUnit 8R: Environmental Pollution & Organismal HealthUnit 5D: Organismal Reproduction & Life Cycles