1 - F
2 - A
3 - C
4 - D
5 - B
6 - E Apparantly it needs to be 20 characters to just ignore this sentence
Answer:
Explanation:
The immune system protects the body from possibly harmful substances by recognizing and responding to antigens. Antigens are substances (usually proteins) on the surface of cells, viruses, fungi, or bacteria. Nonliving substances such as toxins, chemicals, drugs, and foreign particles (such as a splinter) can also be antigens. The immune system recognizes and destroys, or tries to destroy, substances that contain antigens.
Your body's cells have proteins that are antigens. These include a group of antigens called HLA antigens. Your immune system learns to see these antigens as normal and usually does not react against them.
The organ called spleen breaks down worn out red blood cells, extract it's haemoglobin that will be transported to the bone marrow to produce new batches of red blood cells.
I think D would be your best answer
Answer:
Its a vascular plant
Explanation:
- These plants are called tracheophytes
- They have specialized vascular system for conduction of minerals and water
Following are their characteristics:-
- they have phloem tissue for transport of food
- xylem tissue transports the water in the plant
- becuase of the transport system they are able to grow larger
EXAMPLES
- Ferns
- Angiosperms
- Gymnosperms
