Question

On the underside of fern fronds are clusters of within which meiosis occurs and are formed. prothallia sporangia strobili pinnae Gymnosperms are plants with exposed seeds borne on clusters of scale-like structures called microspores megaspores fruits cones Which of the following characteristics is not found in all gymnosperms? pollen cones vessels heterospory seeds A plant like Pine tree with both female and male reproductive structures is dioecious monoecious homosporous heterosporous Pollination is the same as fertiluation. True False Megaspores occur on female cones and produce female gametophytes. True False The sporophyte generation is dominant in gymnosperms. True False How many nuclei are there in a mature megagametophyte? How many are eggs? 4;1 4; 2 8;1 8; 2 2;1

Answer 1

28. The correct answer is the option B, ie sporangia. It is a yellowish or brownish mass on the edge or underside of fern where meiosis occurs.

29. the correct answer is option B. The megaspores bear the seeds, It is an ovulated cone.

30. the correct answer is option C, Vessels are absent in gymnosperm except order Gnetales.

31. the correct answer is option D. The mixture of two or more sexual forms.

32. the correct answer is option B. ie false. The pollination means the transfer of pollen from male organ of the flower to female organ of flower whereas fertilization is a process occurs after pollen reaches the stigma.

33. the correct answer is option A. true . it occours in female cone and divided by meiosis

34. the correct answer is option A. It is true .