5 Written questions
5 Matching questions
- Structure ovules develop into
- Biological clock
- Short-day (long-night) plants
- a An internal timekeeper that controls an organism's biological rhythms; marks time with or without environmental cues, but often requires signals from the environment to remain tuned to an appropriate period.
- b A plant that completes its life cycle in two years.
- c - Need a long continuous (14 hrs) dark period to flower
- Will not flower if dark period is interrupted by even a brief flash of light
- Not affect if daytime period is broken by a brief exposure to darkness
- Flower in early spring, late summer, fall
- Ex. Tulips, daffodils, forsythia, chrysanthemums
- d seed
- e A plant that completes its life cycle in a single year or growing season.
5 Multiple choice questions
- The nonliving portion of a plants vascular system that provides support and conveys xylem sap from the roots to the rest of the plant. Xylem is made up of vessel elements and/or tracheids, water-conducting cells. Primary xylem is derived from the procambium. Secondary xylem is derived from the vascular cambium in plants exhibiting secondary growth. DEAD CELLS MOVES WATER AND MINERALS UP FROM THE ROOTS.
- - A flowering plant whose embryos have a single seed leaf, or cotyledon; parallel veins; vascular bundles are scattered; petals in multiples of 3; fibrous root system.
- nonvascular; mosses; apical meristems; embryophytes; lack true roots/ stems; no lignified cell walls lack support; grow close to the ground; need water for fertilization
- - a plant that grows on another plant, usually anchored to branches or trunks of living trees. Ex. Orchids. They absorb water and minerals from rain
- the three tissue systems of a mature plant complete their development; differentiation; cell specialization
5 True/False questions
petals → A modified leaf of a flowering plant. A whorl of sepals encloses and protects the flower bud before it opens.
Alternation of generations → A life cycle in which there is both a multicellular diploid form, the sporophyte, and a multicellular haploid form, the gametophyte; a characteristic of plants and multicellular green algae.
heartwood → Light-colored, water-conducting secondary xylem in a tree
mycorrhiza → The binding together of like molecules, often by hydrogen bonds
Gametophyte → - a plant that grows on another plant, usually anchored to branches or trunks of living trees. Ex. Orchids. They absorb water and minerals from rain