Biology 5090/22 — October/November 2015
Cambridge O-Level · Theory · worked solutions for every part, with the mark scheme
Topics Organisms and Their Environment · Cell Division and Reproduction · Human Nutrition · Transport in Flowering Plants · Sexual Reproduction in Plants · Transport in Humans · +5 more
Fig. 1.1 shows a carpel of a flower with two pollen grains on top.
Name each of the following:
the process that has brought the pollen grains to the carpel
______
the part of the carpel to which the pollen grains are attached.
______
On Fig. 1.1, draw a line to show the route taken by the pollen tube up to the point at which male and female gametes fuse.
Name each of the following:
a part of the carpel where the nuclei are all diploid
______
a part of the carpel that contains haploid nuclei.
______
Suggest why pollen grain A has not developed a pollen tube.
______
The rest of this paper
8 more questions- Q2Human Nutrition · Organisms and Their Environment12M
- Q3Transport in Humans · Human Gas Exchange11M
- Q4Plant Nutrition · Transport in Flowering Plants · Respiration12M
- Q5Organisms and Their Environment7M
- Q6Human Nutrition10M
- Q7Transport in Flowering Plants · Movement Into and Out of Cells10M
- Q8Cell Structure and Organisation · Organisms and Their Environment10M
- Q9Cell Division and Reproduction10M