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AP Biology Unit 5D: Organismal Reproduction & Life Cycles — practice questions — page 3

Explore 83 free Unit 5D: Organismal Reproduction & Life Cycles questions in AP Biology Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Unit 5D: Organismal Reproduction & Life Cycles questions and exercises with answers

Showing questions 61–83 of 83.

Which of the following is not a role of transpiration?Read the answer and worked solution →Which factor below does not directly affect transpiration rate?Read the answer and worked solution →Which pair forms the conducting system of plants?Read the answer and worked solution →Reproduction in living organisms is the process by which theyRead the answer and worked solution →In plants the two basic modes of reproduction areRead the answer and worked solution →Binary fission in bacteria producesRead the answer and worked solution →In flowers, the male reproductive part that produces pollen is theRead the answer and worked solution →Vegetative reproduction in ginger takes place through itsRead the answer and worked solution →Sansevieria (snake plant) reproduces vegetatively from itsRead the answer and worked solution →Pollination is the transfer of pollen grains fromRead the answer and worked solution →Self-pollination occurs when pollen transfersRead the answer and worked solution →Cross-pollination is the transfer of pollen betweenRead the answer and worked solution →Artificial pollination by farmers is used mainly toRead the answer and worked solution →Fertilisation in flowering plants is the fusion ofRead the answer and worked solution →After fertilisation, the ovule develops into theRead the answer and worked solution →The ovary of a flowering plant develops after fertilisation intoRead the answer and worked solution →Reproduction by formation of spores is seen inRead the answer and worked solution →Potato plants are propagated commercially byRead the answer and worked solution →Bryophyllum reproduces vegetatively from itsRead the answer and worked solution →Onion is propagated vegetatively byRead the answer and worked solution →In wind-pollinated flowers, pollen grains are usuallyRead the answer and worked solution →Insect-pollinated flowers usually attract insects withRead the answer and worked solution →Asexual reproduction differs from sexual reproduction because asexual reproductionRead the answer and worked solution →

Worked practice questions

Which of the following is not a role of transpiration?

  1. Pulling water and minerals upward through xylem
  2. Cooling of leaves on hot, sunny afternoons
  3. Manufacture of food from carbon dioxide and water
  4. Maintenance of turgor in actively growing cells
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Correct answer: C. Manufacture of food from carbon dioxide and water

1. Transpiration cools the leaf surface by evaporation. 2. It creates the pull that lifts the xylem water column. 3. It also keeps cells turgid by drawing in fresh water. 4. Food manufacture is photosynthesis, not transpiration, so option A is the non-role. _Source: Selina Concise Biology Class 8, Ch on Transport in Plants (Mistral OCR'd PDF), Significance of Transpiration_

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Which factor below does not directly affect transpiration rate?

  1. Wind speed across the leaf during the day
  2. Temperature of the air around the leaf
  3. Humidity of the air near the leaf surface
  4. Type of fertiliser applied to the soil
Show answer and solution

Correct answer: D. Type of fertiliser applied to the soil

1. The chapter lists external factors that change transpiration rate. 2. Temperature, humidity and wind speed are all listed. 3. Fertiliser composition is a soil chemistry factor, not a direct one. 4. So option A is the factor that does not act directly. _Source: Selina Concise Biology Class 8, Ch on Transport in Plants (Mistral OCR'd PDF), Factors Affecting Transpiration_

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Which pair forms the conducting system of plants?

  1. Cambium and epidermis
  2. Xylem and parenchyma only
  3. Phloem and cambium only
  4. Xylem and phloem
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Correct answer: D. Xylem and phloem

1. The chapter's opening defines the conducting system. 2. It lists xylem and phloem as the two conducting tissues. 3. Cambium and parenchyma do not transport over long distances. 4. So option A is the correct pair. _Source: Selina Concise Biology Class 8, Ch on Transport in Plants (Mistral OCR'd PDF), Conducting System_

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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 6B: Transcription, Translation & Gene Expression