Did Not Know

Question 1

What is the function of cilia

Answer 1

Moving fluid, mucus and dirt to keep airways clear

Motility by propelling cells

Question 2

What is the function of villi

Answer 2

Larger surface area for efficient absorption

Ease of diffusion as one cell thick

Question 3

What is one difference between claws and nails

Answer 3

Claws are curved and pointed whereas nails are flat and dull

Claws grip, nails provide tactile sensation

Question 4

Describe the structure of a dogs penis

Answer 4

Spongy tissue and erectile tissue

Fills with blood

Includes the urethra

Bulbus glandis

Question 5

State length of gestation period in dogs

Answer 5

68 days

Question 6

Explain the role of androgen binding hormone

Answer 6

Maintain high concentrations of testerone in testes

Binds testerone

Question 7

Describe the process of gametogensis

Answer 7

Formation of sperm

Formation of ova’s

Continuous process in males

Occurs in foetus in females

stimulated by FSH

Question 8

Describe ADH

Answer 8

Increased water in kidneys

Controls urine formation and homeostasis

Synthesised in hypothalamus

Question 9

Describe taxonomic classification

Answer 9

System to group organisms

Shows similarities and differences between organisms

Severn levels

Kingdom, phylum, class, order, family, genus, species

Kingdom least and species most

Question 10

State the name of diagram that shows common ancestor of different species

Answer 10

Phylogenetic tree