What is the function of the ovary?

Chetan and Devi are investigating how sugar affects the growth of pollen tubes.

Chetan's plan:
A. Put some pollen into a concentrated sugar solution.
B. Put some pollen into a dilute sugar solution.
C.  After one hour, estimate which solution has more pollen tubes. 

Devi's plan:
A. Get four beakers:
• three contain different concentrations of sugar solution: 5%, 10% and 15%
• one contains pure water.
B. Add the same amount of pollen to each of the different sugar solutions.
C. After one hour, count how many pollen tubes can be seen. 

Name a piece of apparatus that you might use to observe the growth of the pollen tubes. 

The sea bean grows on the banks of rivers in Africa, Australia and South America. Its seeds form inside large woody pods. The pods drop into the river and float away.

Name the type of seed dispersal used by the sea bean. (Water/ Wind/ Animals)

Moninder wants to find out the best temperature for mustard seeds to germinate. He uses three Petri dishes. Each dish has a layer of moist tissue paper covered with 30 mustard seeds. Moninder puts one dish in a warm cupboard, one in a cool cupboard and one in a refrigerator. He waters all of the seeds regularly for 21 days. His results for the first four days are shown in the table.

How many seeds had germinated by day 4 in the warm cupboard?

Moninder wants to find out the best temperature for mustard seeds to germinate. He uses three Petri dishes. Each dish has a layer of moist tissue paper covered with 30 mustard seeds. Moninder puts one dish in a warm cupboard, one in a cool cupboard and one in a refrigerator. He waters all of the seeds regularly for 21 days. His results for the first four days are shown in the table.

What conclusion can you draw from Moninder's results? 

The diagram shows the flower of a lily plant. This lily is pollinated by insects.