Biology Basics

What type of organism is always at the top of a food chain?

• Predator or top-level consumer

• Primary consumer

• Decomposer

• Producer

Answer explanation

The organism that is always at the top of a food chain is the predator or top-level consumer. It occupies the highest trophic level and feeds on other organisms.

What are the essential minerals required by plants for their growth and development?

• Minerals like paper, plastic, and glass

• Minerals like diamonds, gold, and silver

• Minerals like chocolate, coffee, and ice cream

• Minerals like nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur are essential for the growth and development of plants.

Answer explanation

Minerals like nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur are essential for plant growth and development.

What is the superhero responsible for the plant's transpiration and gas exchange?

• Stomata, the Leaf Guardian

• Rooty, the Plant's Roots Warrior

• Seedling, the Seed Superstar

• Flora, the Flower Defender

Answer explanation

Stomata, the Leaf Guardian, is the superhero responsible for the plant's transpiration and gas exchange.

What is the process by which certain organisms obtain energy through the oxidation of inorganic substances, such as hydrogen sulfide or ammonia?

• Photosynthesis

• Cellular respiration

• Fermentation

• Chemosynthesis

Answer explanation

Chemosynthesis is the process by which certain organisms obtain energy through the oxidation of inorganic substances, such as hydrogen sulfide or ammonia. It is different from photosynthesis, cellular respiration, and fermentation.

What is the process of cellular respiration that requires oxygen to produce energy from food?

• Anaerobic respiration

• Photosynthesis

• Cell division

• Aerobic respiration

Answer explanation

Aerobic respiration is the process of cellular respiration that requires oxygen to produce energy from food.

What do you call a group of organisms that rely on each other for food?

• energy web

• food chain

• water chain

• nutrient ladder

Answer explanation

A group of organisms that rely on each other for food is called a food chain. It represents the flow of energy from one organism to another in an ecosystem.

What do you call the interconnected food chains in an ecological community?

• nutrition net

• food web

• food ladder

• energy circle

Answer explanation

A food web is the interconnected food chains in an ecological community, highlighting the correct choice.

What is the main pigment involved in photosynthesis?

• carotene

• chlorophyll

• hemoglobin

• melanin

Answer explanation

The main pigment involved in photosynthesis is chlorophyll. It absorbs light energy and converts it into chemical energy.

What is the main source of energy for most ecosystems?

• Wind

• Nuclear power

• The sun

• Fossil fuels

Answer explanation

The main source of energy for most ecosystems is the sun.

What is the process by which plants convert light energy into chemical energy to produce food?

• Photolysis

• Chlorophyll breakdown

• Photosynthesis

• Respiration