True/False
The gametophyte fern plant has only half the genetic material of a mature fern plant.
True
Why is it beneficial that most plants do not self-pollinate?
Self-pollination reduces the genetic variety and often results in weaker plants.
Which of the following transports water and minerals from the roots throughout a plant?
a cotyledons c. xylem
b anthers d. chlorophyll
C. Xylem
The most common gymnosperms are
a conifers. c flowering bulbs.
b shrubs. d ginkgoes.
A Conifers
All plants make seeds.
False. Many do, but some (including mosses and ferns) do not.
Give an example of a taproot and a fibrous root. Possible answers: taproot—carrot,
beetroot, turnip, radish, dandelion; fibrous roots—grasses, tomato, ferns, corn and
other monocots
taproot—carrot, beetroot, turnip, radish, dandelion;
fibrous roots—grasses, tomato, ferns, corn and other monocots
A plant that shows thigmotropism would grow
a seta. c fruit.
b spores. d tendrils.
D. Tendrils
True or False.
Mosses mature quickly.
False. The sporophytes take 6–18 months to mature.
The female cones of gymnosperms contain pollen.
False. The female cones contain ovules and seeds; the male cones contain pollen.
Explain the difference between a monocot and a dicot.
A monocot has a single cotyledon from which the embryo grows. A dicot grows from a double cotyledon.
Monocots have leaves with parallel veins, a fibrous root structure, herbaceous stems, and flowers and petals that grow in groups of three.
Dicots have a taproot, leaves with branching veins, woody stems, and flowers that have four or five petals.
A leaf produces
a glucose. c nectar.
b nitrogen. d pollen.
A. Glucose
A student experimenting with plants finds that the roots grow toward gravity. The student concludes that the plant shows
a hydrotropism. c phototropism.
b gravitropism. d thigmotropism.
B Gravitropism
Vascular plants have vessels to transport materials throughout the plant, but nonvascular plants do not have these vessels
True
Describe the interrelationship of flowers, insects, and birds, and explain how each one benefits.
Flowers require pollination, preferably by pollen that comes from another plant from the same species. Insects and birds are attracted to the flowers by the patterns and colors or the odors. The insects and birds benefit by being able to drink the nectar in the flower; while there they pick up pollen and inadvertently bring it to a neighboring plant, pollinating it.
Stamen and pistils are found in
a leaves. c stems.
b flowers. d roots.
From the rings on the cross section of the tree in the picture, tell the life story of this tree
Its first year of growth was 1976.
Prevailing winds from the north led to the narrower rings on that side.
The wide rings would indicate optimum growing conditions with lots of moisture.
The narrow rings might be due to insect infestations on the leaves or dry weather.
Annuals complete their life cycle in many seasons, biennials in one season, and perennials in two seasons.
False. Annuals complete their life cycle in one season, biennials in two seasons, and perennials in many seasons
Describe three different ways in which God has designed seeds to be dispersed and give an example of each.
wind: seeds with parachutes or wings, such as dandelions;
water: seeds that are waterproof and can float, such as coconuts;
cling to animal fur: burrs;
burst open: milkweed;
animal excrement: fruit
Mature seeds are found in
a moss capsules. c fruit.
b pollen. d phloem.
C Fruit
Explain ways in which God balances creation by discussing the variety of plant types and their living requirements. Give specific examples from the variety of plants studied in this unit to prove your points.
Possible answers: The fact that plants are designed to handle all the various environmental conditions (heat levels, soil quality, moisture level, sun conditions) indicates the range of variety that God has incorporated in creation.
(Note: Students should also give examples from nonvascular plants and non-seed producing plants in their answers.)