Plant Structure and Function Concepts

This video tutorial explores the differences between unicellular and multicellular organisms, focusing on how surface area to volume ratio affects their structure and function. Unicellular organisms, like Paramecium and amoeba, rely on diffusion due to their large surface area to volume ratio. In contrast, multicellular organisms have specialized cells and systems, such as circulatory systems, to manage nutrient and gas exchange. The video also discusses emergent properties, where the whole organism exhibits capabilities greater than the sum of its parts, using examples from plants and animals.

What is the primary factor that affects whether an organism is unicellular or multicellular?

• The organism's lifespan

• The organism's diet

• The organism's habitat

• The surface area to volume ratio

Which of the following is an example of a unicellular organism?

• Tiger

• Paramecium

• Elephant

• Sunflower

Why is diffusion adequate for unicellular organisms?

• They have a small surface area to volume ratio

• They live in water

• They have a large surface area to volume ratio

• They have specialized organs

What arises in multicellular organisms due to a lower surface area to volume ratio?

• The need for a circulatory system

• The need for more sunlight

• The need for a larger habitat

• The need for more food

What is the term used to describe the process where cells in multicellular organisms perform different functions?

• Respiration

• Specialization

• Diffusion

• Photosynthesis

Which part of a plant is responsible for anchoring it to the ground?

• Leaves

• Roots

• Stem

• Flowers

What allows a sunflower to face the sun?

• Its leaves

• Its flowers

• Its roots

• Its stem

What do the rods and cones in a tiger's eyes detect?

• Taste

• Smell

• Light

• Sound

What is an emergent property of the tiger's eyes?

• Ability to see clearly

• Ability to swim

• Ability to fly

• Ability to run fast

Why is it important to understand the concepts of unicellular and multicellular organisms?

• To know how to grow plants

• To understand the history of animals

• To understand the specialization of living organisms

• To learn how to swim