Distinguish between the members of each of the following pairs by making a brief comment on each - Leaving Cert Biology - Question 6 - 2006
Question 6
Distinguish between the members of each of the following pairs by making a brief comment on each.
(a) Tuber
(b) Ureter and urethra
(c) Hypha and mycelium
g) Thig... show full transcript
Worked Solution & Example Answer:Distinguish between the members of each of the following pairs by making a brief comment on each - Leaving Cert Biology - Question 6 - 2006
Step 1
Tuber and bulb
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
A tuber is a stem or root structure that serves as a storage organ, typically fleshy, such as the potato. In contrast, a bulb is a modified leaf or bud structure, usually containing a short stem and fleshy leaves, like the onion. Both serve as storage for nutrients but differ in structure and function.
Step 2
Ureter and urethra
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The ureter is a tube that carries urine from the kidney to the bladder, while the urethra is the duct through which urine is expelled from the bladder to the outside of the body. Thus, they serve different roles in the urinary system.
Step 3
Hypha and mycelium
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
A hypha is a filamentous structure that makes up the body of a fungus, serving as a growth unit. Mycelium, on the other hand, refers to a network of these hyphae that collectively form the main body of a fungus, playing a crucial role in nutrient absorption.
Step 4
Thigmotropism and chemotropism
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Thigmotropism is a growth response of plants or organisms to touch or physical stimuli, while chemotropism refers to a growth response towards chemicals. Both are vital for how organisms interact with their environment.
Step 5
Antigen and antibody
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
An antigen is a substance that triggers an immune response, often found on the surface of pathogens like viruses or bacteria. An antibody, in turn, is a protein produced by lymphocytes in response to an antigen, designed to neutralize or destroy the antigen.
Join the Leaving Cert students using SimpleStudy...
