8th grade Science Quiz

The process by which living beings incorporate gases from the environment to perform their vital functions is ...

• breathing

• photosynthesis
• fermentation
• digestion

What functions are affected when an organism has poor nutrition?

• Growth

• Metabolism

• The formation and repair of tissues

• All of the above

The garden violet is able to produce its own food from inorganic elements such as carbon. What kind of organism is it?

• Heterotroph
• Decomposer
• Autotroph

• Saprotroph

Type of organism that is not able to produce their own food...

• Heterotrophs
• Photosynthetic organisms
• Autotrophs
• Prokaryotes

The digestive system functions are:

• The digestive system functions include breaking down food, absorbing nutrients, and eliminating waste.
• Producing hormones for growth
• Regulating body temperature
• Storing energy for future use

According to the complexity of the digestive system of vertebrates, starting with the simplest and ending with the most complex ones, what would be the right order?

• fish, amphibians, reptiles, birds, mammals

• Birds, reptiles, jawed fish, jawless fish, amphibians
• Amphibians, jawless fish, reptiles, birds, mammals
• Jawed fish, amphibians, reptiles, mammals, birds

Which is the plant tissue responsible for conducting substances and consist of phloem and xylem?

• Vascular tissue
• Cortex tissue
• Epidermal tissue
• Ground tissue

If a plant obtains sunlight, minerals, water, and carbon dioxide, what products would result from the photosynthetic process?

• Water and minerals
• Nitrogen and hydrogen
• Glucose and oxygen
• Carbon monoxide and glucose

What is the name of the circulatory system that not contain a network of capillaries?

• Closed circulatory system
• Lymphatic system
• Pulmonary circulatory system
• Open circulatory system

What protein carries oxygen in the hemolymph of invertebrates?

• Chlorophyll
• Myoglobin
• Hemocyanin
• Hemoglobin