Question

BIOL 1030 Lab 7 Page 16 Name Student Number BIOL 1030 Lab 7 Assignment - Tear out this page and hand it into your TA. Each Assignment is worth 1% of your final grade. BIOL 1030 Lab Assignments MUST be submitted to your TA before you leave the lab. Question 1 - (10 marks) Label the two diagrams below exine () intine () generative cell (g.c.)[1N) () g.c. plasma membrane () g.c. nucleolus ) g.c. nucleus () tube nucleus [1N] ( ) Mitosis Two sperm cells Figure 3c. Lilium anther c.s. showing two celled pollen grain (microgametophyte) antipodals [1N] (2 of 3) () egg ( ) funiculus (vascular tissue) () integuments [2N] ) megasporangium [2N] ( ) micropyle() polar nuclei [1N] ( ) synergid [IN] ( ) Figure 3d. Angiosperm (Lilium) ovule showing mature 8-nucleate megagametophyte

Answer 1

BIOL 1030 Lab 7 Page 16 Name Student Number BIOL 1030 Lab 7 Assignment - Tear out this page and hand it into your TA. Each Assignment is worth 1% of your final grade. BIOL 1030 Lab Assignments MUST be submitted to your TA before you leave the lab. Question 1 - (10 marks) Label the two diagrams below exine () 6 intine () generative cell (g.c.)[1N] ( ) 1 g.c. plasma membrane () g.c. nucleolus ( 4 g.c. nucleus (). tube nucleus [1N] () 3 Mitosis Two sperm cells Figure 3c. Lilium anther c.s. showing two celled pollen grain (microgametophyte) 000 ANNA antipodals [1N] (2 of 3) ( ) egg ( funiculus (vascular tissue) () integuments [2N] ) megasporangium (2N] ( ) micropyle ( ) polar nuclei [1N] () synergid [1N) () (egg is absent in image) Figure 3d. Angiosperm (Lilium) ovule showing mature 8-nucleate megagametophyte

The first image is showing tetrasporangiate anther. It contains microspore mother cell which undergo meiosis to form Pollen tetrad. Pollen grains represent male gametophyte. Inside ovary, they undergo mitosis to form two sperm cells.

The second image is showing female gametophyte. It is also called as the embryo sac. It contains three antipodals, to synergic, two polar nuclei and one egg cell. Synergid and egg cell together are called as egg apparatus. The big cell into which all these cells are suspended is called as the central cell.

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