The animal shown in Figure 3 is a tick burrowing into the skin of a human - Edexcel - GCSE Biology Combined Science - Question 2 - 2020 - Paper 1
Question 2
The animal shown in Figure 3 is a tick burrowing into the skin of a human.
(a) Use words from the box to complete the sentences:
(i) The tick burrows into the skin... show full transcript
Worked Solution & Example Answer:The animal shown in Figure 3 is a tick burrowing into the skin of a human - Edexcel - GCSE Biology Combined Science - Question 2 - 2020 - Paper 1
Step 1
Use words from the box to complete the sentences: (i)
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
The tick burrows into the skin to obtain food.
Step 2
Use words from the box to complete the sentences: (ii)
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
This means that ticks are classed as parasites.
Step 3
When skin is cut a blood clot forms: (i)
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
The part of the blood that completes the clotting process is C platelets.
Step 4
Zebras eat grass: (ii)
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
The food chain is: Grass → Zebras → Ticks → Oxpeckers.
Step 5
Describe the difference in the maximum number of oxpeckers on the white rhino and on the hippo: (i)
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
The maximum number of oxpeckers observed on the white rhino is greater than that on the hippo, as the white rhino provides a more consistent food source due to its larger size and availability of skin parasites.
Step 6
Give one reason why more oxpeckers were observed on giraffes than on zebras: (ii)
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
More oxpeckers were observed on giraffes than on zebras because giraffes have taller and more exposed skin areas, allowing easier access for the birds to feed on parasites.
