2026 SOLVED QUESTIONS GRADED A+
● rule of ten percent. Answer: only ten percent of the energy in a trophic
level gets passed on to the next level
● What are the requirements for terrestrial life?. Answer: Cuticle,
increased rigidity, vascular tissue, decreased reliance on water for
reproduction
● Alternation of Generations. Answer: The alternation of a plant's life
cycle between its gametophyte and the sporophyte generations
● Homospourous Life Cycle. Answer: -Produces only one type of spore
-Bryophytes and Seedless Tracheophytes
● Heterosporous Life Cycles. Answer: -Produces two different types of
spores (Megaspores: female) (Microspores: males)
-Seed Tracheophytes
● Gametophyte Generation. Answer: -Genetic content= N
-Gametophytes produces gametes via mitosis
, -Gametophyte structures: Spores, gametophyte plant,
antheridia/archegonia, sperm/egg
● Sporophyte Generation. Answer: -Genetic content= 2N
-Sporophytes produces spores via meiosis
-Sporophyte structures: zygotes/embryos, sporophyte plant, sporangia,
spore mother cell
● Bryophytes. Answer: -mosses
-terrestrial life: Cuticle
-Dominant generation: gametophyte (g=green)
-capsule: sporophyte diploid
-gametophyte: haploid. bi, 2 structures for egg and sperm
● Seedless Tracheophytes. Answer: -monoecious (having both male and
female reproductive organs on same individual)
-terrestrial life: vascular tissue, cuticle, and rigidity
-dominant generation: soprophyte
-one big collection of sporangia/sori
-sporangia go through meiosis to produce spores
1. archegonium
2. anthridium