Exploring Life Cycles of Organisms

Which of the following is the first stage in the life cycle of a beetle?

• Larva

• Egg

• Adult

• Pupa

Answer explanation

The life cycle of a beetle begins with the egg stage. After the egg hatches, it develops into a larva, then a pupa, and finally matures into an adult beetle. Therefore, the correct answer is 'Egg'.

What is the main function of a seed in the life cycle of a radish plant?

• To make food

• To start a new plant

• To attract insects

• To protect the roots

Answer explanation

The main function of a seed in the life cycle of a radish plant is to start a new plant. Seeds contain the embryo and nutrients needed for germination, allowing the plant to grow and develop.

Tags

NGSS.3-LS1-1

Which stage comes after the larva in the life cycle of a beetle?

• Egg

• Pupa

• Adult

• Seed

Answer explanation

In the life cycle of a beetle, the larva stage is followed by the pupa stage. During the pupa stage, the beetle undergoes transformation before emerging as an adult.

What do you call the young form of a cricket that hatches from the egg?

• Nymph

• Pupa

• Seedling

• Adult

Answer explanation

The young form of a cricket that hatches from the egg is called a nymph. Unlike a pupa, which is a stage in some insects' life cycles, nymphs resemble smaller versions of adults and undergo several molts before reaching maturity.

Which of the following organisms starts its life cycle as a seed?

• Beetle

• Cricket

• Lima bean

• Butterfly

Answer explanation

The lima bean starts its life cycle as a seed, which germinates to grow into a plant. In contrast, beetles, crickets, and butterflies begin their life cycles as eggs, not seeds.

Tags

NGSS.3-LS1-1

Which stage of the lima bean plant comes right after the seed stage?

• Flower

• Seedling

• Adult plant

• Fruit

Answer explanation

After the seed stage, the lima bean plant enters the seedling stage, where it develops leaves and begins to grow. This is a crucial phase for establishing the plant before it matures into an adult plant.

Which of the following best describes the life cycle of a radish plant?

• Egg → Larva → Pupa → Adult

• Seed → Seedling → Adult plant → Flower → Seed

• Nymph → Adult

• Egg → Nymph → Adult

Answer explanation

The life cycle of a radish plant starts with a seed, which grows into a seedling, then matures into an adult plant, flowers, and finally produces seeds. This process is accurately described by the choice: Seed → Seedling → Adult plant → Flower → Seed.

How does the life cycle of a cricket differ from that of a beetle?

• Crickets have a pupa stage, beetles do not.

• Beetles have a nymph stage, crickets do not.

• Crickets have a nymph stage, beetles have a larva and pupa stage.

• Both have the same stages.

Answer explanation

Crickets undergo incomplete metamorphosis, having a nymph stage that resembles adults. In contrast, beetles experience complete metamorphosis, with distinct larva and pupa stages before becoming adults.

If you plant a lima bean seed, what is the correct order of stages you will observe as it grows?

• Seed → Seedling → Adult plant → Flower → Seed

• Egg → Larva → Pupa → Adult

• Nymph → Adult

• Seed → Flower → Seedling → Adult plant

Answer explanation

The correct growth stages of a lima bean are Seed → Seedling → Adult plant → Flower → Seed. This sequence shows the complete life cycle of the plant, starting from the seed and ending with the production of new seeds.

Tags

NGSS.3-LS1-1

Which of the following is a similarity between the life cycles of beetles and crickets?

• Both have a larva stage.

• Both start as eggs.

• Both have a seed stage.

• Both have a flower stage.

Answer explanation

Both beetles and crickets begin their life cycles as eggs, which is a common starting point for many insects. This similarity highlights a fundamental aspect of their development.