Question 1

Which of the following best describes the main purpose of mitosis in multicellular organisms?

Accepted Answer

To enable growth and repair by producing genetically identical cells

Question 2

During which stage of mitosis do the chromosomes align at the center of the cell?

Accepted Answer

Metaphase

Question 3

Which of the following events occurs during meiosis but not during mitosis?

Accepted Answer

Pairing of homologous chromosomes and crossing over

Question 4

A plant species reproduces by producing runners that grow into new plants. This is an example of which type of reproduction?

Accepted Answer

Asexual reproduction

Question 5

Which of the following statements correctly compares sexual and asexual reproduction?

Accepted Answer

Sexual reproduction involves two parents and produces genetically diverse offspring.

Question 6

In flowering plants, which structure is responsible for producing male gametes?

Accepted Answer

Anther

Question 7

Which sequence correctly represents the levels of biological organization from smallest to largest?

Accepted Answer

Cell → Tissue → Organ → Organism → Population

Question 8

A student draws a diagram showing cells forming tissues, tissues forming organs, and organs forming organ systems. What is the next level of organization in this sequence?

Accepted Answer

Organism

Question 9

Which of the following best describes the role of producers in a food chain?

Accepted Answer

They convert solar energy into chemical energy through photosynthesis.

Question 10

If only 10% of energy is transferred from one trophic level to the next, how much energy is available to secondary consumers if the producers have 10,000 J of energy?

Accepted Answer

$$100\ 	ext{J}$$

Question 11

Which of the following is a correct description of a food web?

Accepted Answer

A network of interconnected food chains showing multiple energy pathways.

Question 12

Which process during meiosis increases genetic variation among offspring?

Accepted Answer

Crossing over between homologous chromosomes

Question 13

Which of the following is NOT a mode of asexual reproduction in animals?

Accepted Answer

Fertilization

Question 14

In a certain ecosystem, grass is eaten by rabbits, which are then eaten by foxes. What is the trophic level of the foxes?

Accepted Answer

Secondary consumers

Question 15

Which of the following best explains why energy transfer between trophic levels is inefficient?

Accepted Answer

Most energy is lost as heat due to metabolic activities.

Question 16

Which of the following is an example of sexual reproduction in animals?

Accepted Answer

A frog laying eggs that are fertilized by sperm

Question 17

Which equation best represents the energy transfer between trophic levels in a food pyramid?

Accepted Answer

$$E_n = E_0$ 	imes (0.1)^n$$

Question 18

Which of the following is the correct order of events in sexual reproduction in flowering plants?

Accepted Answer

Pollination → Fertilization → Seed formation

Question 19

A scientist observes that a certain species of lizard can reproduce without a mate, producing offspring genetically identical to itself. What is this process called?

Accepted Answer

Parthenogenesis

Question 20

Which of the following best describes the relationship between a community and an ecosystem?

Accepted Answer

A community consists of all the populations of different species in an area, while an ecosystem includes both the community and the abiotic environment.

Cellular Reproduction, Biological Organization, and Energy Transfer: Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards