http://avxhome.se/blogs/Torries

...

• Sexual reproduction is the formation of new individuals through the gamete formation and their su ...

MTBIOLOGY TODAY | JULY ‘15 49 • Carpel : Megasporophyll • Ovule : Integumented ...

50 MTBIOLOGY TODAY | JULY ‘15 • The presence of fibrous bands, differential expansion of inner and ou ...

MTBIOLOGY TODAY | JULY ‘15 51 Pollen grain • Pollen grain (microspore) is the first cell of the male gametophyte. • ...

52 MTBIOLOGY TODAY | JULY ‘15 development of male gametophyte • The development of the male gametophyte is mor ...

MTBIOLOGY TODAY | JULY ‘15 53 hypostase. These cells usually have poor cytoplasmic contents and deforme ...

54 MTBIOLOGY TODAY | JULY ‘15 female gametophyte. This type of embryo sac is called monosporic. development of ...

MTBIOLOGY TODAY | JULY ‘15 55 pollination • The transfer of pollen grains from anther to the stigma is c ...

56 MTBIOLOGY TODAY | JULY ‘15 Advantages of cross pollination • The advantages for cross pollination are: Cross ...

57 MTBIOLOGY TODAY | JULY ‘15 57 and slender stalk. Due to its weight a small cup-shaped depression is ...

58 MTBIOLOGY TODAY | JULY ‘15 • Humming birds are the most common group of flower visiting birds in ...

MTBIOLOGY TODAY | JULY ‘15 59 The device that guides the pollen tube in the cavity of ovary is (a) obturat ...

60 MTBIOLOGY TODAY | JULY ‘15 In angiosperms, functional megaspore develops into (a) embryo sac (b) ovule (c ...

Troublesome American water weed found in India is (a) Vallisneria (b) Eichhornia (c) Hydrilla (d) Lemna. Endangered plant speci ...

Given below are four methods (A-D) and their modes of action (i-iv) in achieving contraception. Select their correct matching f ...

The Plasmodium initially multiplies within the liver cells and then attacks the red blood cells, resulting in their rupture. Th ...

Water potential gradient between the absorbent and the liquid imbibed is essential for imbibition. In addition, for any substan ...

Phylum annelida • The term Annelida was first coined by Lamarck for the higher segmented worms. • The annelid worms were t ...

nephridia • Nephridia are segmentally arranged coiled tubes of ectodermal origin developed as invaginations from ectoderm int ...