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Plants Bio test
| Question | Answer |
|---|---|
| What are the main characteristics of a plant? (5) | Multicellular, eukaryotic, has a cell wall of cellulose, photoautotrophic, evolved from today's green algae |
| What do plants need in order to survive? (4) | light, water & minerals, gas exchange, movement of water & nutrients |
| How are water & minerals transported in plants? (3) | By diffusion, capillary action, and vascular tissue |
| What are the two vascular tissue that transport water and nutrients in a plant? | xylem and phloem |
| When is diffusion used for transporting water and minerals? | It is used when the water and minerals do NOT need to travel that far |
| How are water and nutrients transferred with capillary action? | By cohesion and adhesion |
| What is xylem? | Vascular tissue that carries water and water-soluble materials |
| What is phloem? | The translocation of photosynthetic product |
| What percent of plants are vascular? | 93% |
| What percent of plants are nonvascular? | 7% |
| What are the 2 different generations of a plant's life cycle? | Sporophytes and Gametophytes |
| Is it diploid spores or diploid zygotes involved in the sporophyte stage? | Diploid zygote |
| Is it haploid zygotes or haploid spores involved in the gametophyte stage? | Haploid spores |
| Are seed plants gametophytes or sporophytes? | Gametophytes |
| Where are nonvascular plants found? | moist areas |
| How big are nonvascular plants? | They are low to the gound |
| Do nonvascular plants have vascular tissue? | They do NOT have vascular tissue |
| What is the dominant generation of nonvascular plants? | gametophyte generation |
| How do nonvascular plants reproduce? | flagellated sperm |
| What do nonvascular plants make? | they make gametes |
| Examples of nonvascular plants.. | mosses, liverworts, hornworts |
| Do seedless vascular plants have vascular tissue? | Yes they do |
| Where are seedless vascular plants found? | Moist habitat near water |
| Why are seedless vascular plants found near water? | for reproduction |
| What is the dominant generation of seedless vascular plants? | sporophyte generation |
| How do seedless vascular plants reproduce? | they make spores |
| Examples of seedless vascular plants... | club mosses, horsetail, ferns |
| What type of vascular plants are club mosses? | seedless vascular plants |
| What is a trait about horsetails? | they have abrasive silica in their stems |
| Where are spores located? | In the sori, or pocket of spores |
| What are fronds? | fern leaves |
| How do seed plants reproduce? | they make gametes |
| What is the dominant generation of a seedless plant? | gametophyte generation |
| What are adaptations of seed plants? | Don't have to be near water, can grow almost anywhere |
| What's another name for a gymmnosperm? | naked seed plant |
| Examples of gymnosperms.. | cycad, gingko, conifers |
| What is more diverse-- Angiosperms or Gymnosperms? | Angiosperms |
| What are angiosperms also known as? | anthophytes, or flowering plants |
| Examples of angiosperms? | any type of flower |
| What are characteristics of monocots? (4) | Petals/sepals are in parts of 3's, seeds have one cotyledon, stems have vascular bundles, leaves have parallel venation |
| What are characteristics of dicots? | Petals are in parts of 4's an 5's, seeds have 2 cotyledons, wood has growth rings, leaves have net variation |
| What are other names for egg? | ovule, ovum, or oocyte |
| What type of seed plant is a pine cone? | Gymnosperm |
| What are the three parts of a seed? | 1)embryo/zygote (fertilized egg) 2)endosperm (food for the sperm) 3)seed coat |
| What is tropism? | a response due to an environmental stimulus |
| What is tropism controlled by? | hormones |
| What is phototropism? | response with light |
| What is gravitropism? | response with gravity |
| What is thigmotropism? | response with touch |
| What is a vascular system? | A tube-like transport system for water and minerals |
| What does it mean to be nonvascular? | It means you have no vessels for transporting materials |
| What is the phyta for green algae? | Chlorophyta |
| What is the vein in plants? | vascular tissue gathered in leaves |
| What is a sepal? | The leaf-like parts at the base of a flower |
| What is a petal? | Brightly colored, usually delicate. Protect flower parts |
| What is an anther? | A male part of the plant that produces pollen, which hold the male gametes (sperm) of a plant |
| What is a stigma? | The sticky top portion of the female part of the plant |
| Why is it so important for the stigma to be sticky? | So that pollen can stick to it and the sperm can travel to the ovary |
| What is an ovule? | eggs of an angiosperm |
| Where is the ovule found? | in the ovary |
| What is the filament? | The stalk that holds up the anther |
| What is the style? | The stalk of the pistil; in between the ovary and stigma |
| What is pollen? | A substance that holds sperm |
| How does pollen travel? | By wind, rain, or animals bringing it to other flowers |
| What is a flower? | The reproductive part of an angiosperm |
| What is the stamen? | the male part of the flower |
| What does the stamen consist of? | filament and anther |
| What is an ovary? | The base of the pistil |
| What does the ovary contain? | female gametes (eggs) |
| What is the pistil? | The female part of a flower |
| What does the pistil consist of? | stigma, style, and ovary |
| GOOD LUCK :)!! | GOOD LUCK :)!! |
Created by:
sahil
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