AS Tissues and Organs

Which of the following is NOT a characteristic of multicellular organisms?

• Consist of more than one cell

• Can contain many millions of cells

• Have specialized cells

• Have cells that carry out the same function

Tissues are composed of groups of cells that:

• Carry out different functions

• Have different structures

• Carry out the same function

• Are not specialized

Tags

NGSS.MS-LS1-3

Which of the following is an example of an organ in humans?

• Palisade layer in a plant leaf

• Vascular tissue in a leaf

• Ileum

• Spongy mesophyll tissue

The primary role of the ileum is:

• Photosynthesis

• Absorption of digested food

• Transpiration

• Moving undigested food through to the colon

The alimentary canal is part of which organ system?

• Respiratory system

• Circulatory system

• Digestive system

• Nervous system

Which layer of the alimentary canal provides a thin protective and supportive lining?

• Serosa

• Muscularis externa

• Submucosa

• Mucosa

What is the role of the muscularis externa in the alimentary canal?

• Absorption of digested food

• Production of digestive enzymes

• Churning and mixing of food

• Protection against digestive enzymes

The submucosa of the alimentary canal contains:

• Blood vessels and lymphatic vessels

• Connective tissue

• Longitudinal muscle

• Circular muscle

The mucosa of the alimentary canal is in direct contact with:

• Blood in the capillaries

• Food in the gut lumen

• Muscle cells

• Connective tissue

What is the role of villi in the ileum?

• Protection against digestive enzymes

• Absorption of digested food

• Production of mucus

• Movement of undigested food