Biology 9700/22 — October/November 2019
Cambridge AS Level · AS Level Structured Questions · worked solutions for every part, with the mark scheme
Topics Cell Structure · Transport in Mammals · Nucleic Acids and Protein Synthesis · Transport in Plants · Gas Exchange · Cell Membranes and Transport · +5 more
Fig. 1.1 is a photomicrograph of a transverse section through the stem of creeping buttercup, Ranunculus repens.
Draw one label line on Fig. 1.1 to indicate one precise location where phloem sieve tubes occur.
State the role of phloem sieve tubes.
A good quality plan diagram of Fig. 1.1 will show only the tissues in the stem in their correct location and in the correct proportions.
State the name of the tissue that forms the outer layer of the stem section of R. repens in Fig. 1.1.
State the piece of equipment that can be used in the light microscope to work out the correct proportions of the tissues.
Draw a diagram in the space provided to show the structure of a typical plant cell.
Label your diagram with the name of any structures that are found only in plant cells.
Do not label any structures that are also found in animal cells.
The rest of this paper
5 more questions- Q2Gas Exchange · Transport in Mammals7M
- Q3Cell Structure · Transport in Mammals · Nucleic Acids and Protein Synthesis · Cell Membranes and Transport14M
- Q4Biological Molecules · Nucleic Acids and Protein Synthesis11M
- Q5Infectious Diseases · Immunity12M
- Q6The Mitotic Cell Cycle · Enzymes6M