Modes of Living and Surafce Area to Volume (Grade 11 NSC Matric Life Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What is a body plan?
What is a body plan?
The way an animal's body is organised
Which phylum has asymmetrical body symmetry and no true tissues?
Which phylum has asymmetrical body symmetry and no true tissues?
Porifera
Which type of symmetry do jellyfish and sea anemones possess?
Which type of symmetry do jellyfish and sea anemones possess?
Radial symmetry
Which phyla have a complete digestive system with two gut openings?
Which phyla have a complete digestive system with two gut openings?
Annelida, Arthropoda, and Chordata
What is cephalisation?
What is cephalisation?
Development of a head with sensory organs
Most animals in Platyhelminthes live as what?
Most animals in Platyhelminthes live as what?
Internal parasites
What does surface area to volume ratio compare?
What does surface area to volume ratio compare?
Outer surface relative to internal volume
As organisms get larger, what happens to their SA:V ratio?
As organisms get larger, what happens to their SA:V ratio?
They have less surface area per volume
A cube is cm. What is its SA:V ratio?
A cube is cm. What is its SA:V ratio?
Why do flatworms have very thin, flat bodies?
Why do flatworms have very thin, flat bodies?
To maximise surface area for gas exchange