Public Quiz: Unit 3 : Reproduction in Living Organisms (Science) - Preparatory 2 - Science

Question 1

What characterizes self-pollination in flowers?

Pollen grains are always light, dry, and smooth.

Pollen is transferred from an anther to a stigma on the same plant.

Stamens and pistils mature at different times.

Pollen is transferred between flowers on two different plants.

Question 2

What is the chromosome number found in a zygote formed through sexual reproduction?

An unpredictable number of chromosomes.

A complete set of chromosomes (2n).

Half the number of chromosomes (n).

A quarter of the original chromosome number (n/2).

Question 3

An elephant has 56 chromosomes and a crow has 80 chromosomes. What conclusion can be drawn from this?

Crows are genetically more complex than elephants.

Chromosome count indicates the evolutionary age of a species.

Chromosome count does not determine an organism's size.

Elephants have fewer genes than crows.

Question 4

Besides protecting reproductive organs, what is a key function of the corolla?

Producing ovules for fertilization.

Developing into the seed after successful pollination.

Attracting pollinating insects that assist in sexual reproduction.

Providing structural support to the entire flower.

Question 5

What event immediately follows the formation of a zygote in sexual reproduction?

The zygote immediately becomes a mature organism.

The zygote begins to undergo mitotic divisions to develop into an embryo.

The zygote undergoes a reductional division.

The zygote divides meiotically to form gametes.

Question 6

The pedicel is the swollen part of the flower that bears the floral leaves.

False

True

Question 7

What is a primary function of the corolla?

Anchoring the flower to the stem.

Attracting pollinating insects with its bright colors and fragrance.

Producing pollen grains for reproduction.

Developing into the fruit after fertilization.

Question 8

Which characteristic is typical of wind-pollinated flowers?

Their anthers are located inside the flower due to short filaments.

Their petals are large with bright colors.

Their pollen grains are light, dry, and smooth.

They typically have a noticeable scent and secrete nectar.

Question 9

Maize (corn) flowers are examples of unisexual flowers.

True

False

Question 10

Where does meiosis primarily occur in living organisms?

Only in damaged tissues for repair.

In bacterial cells for reproduction.

In all somatic cells for growth.

In the gonads to produce gametes.

Question 11

Which of the following cell types typically contains a diploid (2n) number of chromosomes?

Somatic cells of an organism

Sperm cells

Ova

Pollen grains

Question 12

What is the collective term for the male reproductive organs of a flower?

Petals

Carpels

Pistil

Stamens

Question 13

What are gonads primarily responsible for producing in animals and humans?

Cancerous tumors.

Somatic cells for growth.

Complete genetic clones.

Gametes, which are specialized cells for sexual reproduction.

Question 14

After fertilization, the ovules contained within the ovary develop to become the seeds.

False

True

Question 15

Under what condition are the calyx and corolla referred to collectively as the perianth?

When petals are fused and arranged in a single whorl.

When sepals cannot be distinguished from petals based on color or appearance.

When a flower contains only sepals and lacks petals entirely.

When both sepals and petals are absent from the flower.

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Public Quiz: Unit 3 : Reproduction in Living Organisms (Science) - Preparatory 2

What characterizes self-pollination in flowers?

What is the chromosome number found in a zygote formed through sexual reproduction?

An elephant has 56 chromosomes and a crow has 80 chromosomes. What conclusion can be drawn from this?

Besides protecting reproductive organs, what is a key function of the corolla?

What event immediately follows the formation of a zygote in sexual reproduction?

The pedicel is the swollen part of the flower that bears the floral leaves.

What is a primary function of the corolla?

Which characteristic is typical of wind-pollinated flowers?

Maize (corn) flowers are examples of unisexual flowers.

Where does meiosis primarily occur in living organisms?

Which of the following cell types typically contains a diploid (2n) number of chromosomes?

What is the collective term for the male reproductive organs of a flower?

What are gonads primarily responsible for producing in animals and humans?

After fertilization, the ovules contained within the ovary develop to become the seeds.

Under what condition are the calyx and corolla referred to collectively as the perianth?