Living things: แบบฝึกหัด

Which of the following groups of vertebrates is characterized by having a body covered with feathers and maintaining a constant body temperature?

Which of the following best describes the primary characteristic that allows bacteria to be classified as a distinct group of microorganisms?

Many organisms exhibit facultative reproduction, meaning they can switch between asexual (e.g., budding or fragmentation) and sexual reproduction depending on conditions. If an organism primarily relies on rapid asexual reproduction in stable, favourable conditions, what is the primary survival benefit of switching to sexual reproduction when its environment becomes harsh and unpredictable?

Which of the following processes is a vital function that all living things must perform to ensure the continuity of their species across generations?

Which of the following characteristics is a key feature that helps distinguish a vascular plant from a non-vascular plant?

Identify the vital function that ensures the continuation of a species from one generation to the next.

While plants can produce their own food through photosynthesis, all living organisms, including plants, must perform cellular respiration. What is the primary purpose of cellular respiration in a plant?

Living organisms require both nutrition and growth as vital functions. Explain the relationship between these two functions in a multicellular organism.

Nature consists of a vast variety of organisms, from tiny bacteria to giant trees. Understanding this variety is a key part of science.

a) What is meant by the term biodiversity? (1 point)

b) Provide two reasons why scientists classify living things into different groups. (2 points)

c) Scientists often use an identification key when they find an unknown organism. State the primary purpose of using such a key. (1 point)

d) Biodiversity is not just about the number of species; it is important for the health of our planet. State one way that high biodiversity benefits the natural environment. (1 point)

Green plants are known as producers because they can make their own food through photosynthesis.
a) Write the word equation for the process of photosynthesis. (2 points)
b) Identify the green pigment required for this process and explain its role in capturing energy. (2 points)