AP BIOLOGY

Detailed explanation-1: -True or false? Most gymnosperms produce both male and female fruit? False, cones.

Detailed explanation-2: -Gymnosperms are mainly conifers, such as pine and fir trees. They produce both male and female cones.

Detailed explanation-3: -In gymnosperms, a leafy green sporophyte generates cones containing male and female gametophytes; female cones are bigger than male cones and are located higher up in the tree. A male cone contains microsporophylls where male gametophytes ( pollen ) are produced and are later carried by wind to female gametophytes.

Detailed explanation-4: -Gymnosperm Reproduction Female gametes (megaspores) are produced in gametophyte structures called archegonia located in ovulate cones. Male gametes (microspores) are produced in pollen cones and develop into pollen grains.

Detailed explanation-5: -Gymnosperms have naked ovules, hence they do not have ovary. In angiosperms after fertilisation ovule develops into seed and ovary wall into pericarp. They together constitute a fruit. But in the absence of ovary, there would be no formation of fruit in gymnosperms.