Diversity and Classification of Living Things: แบบฝึกหัด

Which part of a plant is primarily responsible for absorbing water and essential nutrients from the soil?

An explorer discovers a new animal in a tropical rainforest. This animal has a backbone, its skin is moist and smooth, it lays many soft, jelly-like eggs in water, and it spends parts of its life in water and parts on land. Which animal group does this new animal most likely belong to?

When classifying vertebrates, which of the following is a characteristic that is unique to birds and does not appear in any other class of vertebrates?

A student finds a plant that produces spores instead of seeds for reproduction and does not produce flowers. How should this plant be classified, and what is a likely example of such a plant?

When classifying animals, specific body characteristics are used to group them. Which set of characteristics is unique to animals classified as Insects?

Living things have unique characteristics that distinguish them from non-living things. Name two life processes that living things can perform which non-living things are unable to do.

Name one type of vertebrate and one type of invertebrate. For each, describe one key characteristic that places it in that group.

Imagine you find a plant with vibrant red petals and prominent stamens, but no apparent fruit. Based on these features, classify this plant into one of the main plant groups and explain the primary role of its colourful petals in its life cycle.

a) Name three main parts of a typical flower and briefly describe the function of each part in reproduction. (3 points)

b) Describe the four main stages of the sexual life cycle of a flowering plant, starting from a seed. (4 points)

Imagine a team of scientists discovers a new microscopic organism in a remote rainforest. They observe it undergoing processes like growth, reproduction, and movement, responding to light. Upon closer examination of its cells under a powerful microscope, they find that each cell has a rigid outer layer and contains small green structures, but no complex organs are visible in the organism.

a) Based on the initial observations, what are two characteristics that clearly indicate this new organism is a 'living thing'? (2 points)

b) Considering the cellular structures observed (a rigid outer layer and small green structures within each cell), how would you classify this organism, primarily as an animal or a plant? Explain your reasoning by referring to both these structures and what they suggest about the organism's classification. (3 points)

c) Explain how the 'small green structures' help this organism survive, and describe the fundamental difference in how most animals obtain the energy they need for survival compared to this organism. (2 points)