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Flowers/Fruits/Seeds
Bio Sci 104 Lab 7
| Question | Answer |
|---|---|
| Angiosperms | Botanical term for flowering plants |
| Name the four whorls in order from outside to inside | Calyx, Corolla, Stamen, Pistil |
| Calyx | The group of sepals at the base of the flower |
| Corolla | The group of Petals just above the calyx |
| Stamen | The male parts of the flower; the anther and filament |
| Anther | The enlarged part at the top that produces pollen |
| Filament | A stalk to which the anther is attached |
| Pistil | The female parts of the flower; Stigma, Style, Ovary |
| Stigma | The sticky part at the top that traps pollen |
| Style | The stalk to which the stigma is attached |
| Ovary | The base of the pistil that contains the ovules |
| What is a "perfect" flower | A flower that contains both male and female parts; bisexual flower |
| What is a COMPLETE flower? | A flower that contains all four floral series/whorls |
| Monocot flowers petals and sepals are in multiples of what number? | 3 |
| Dicot flowers petals and sepals are in multiples of what numbers? | 4 and 5 |
| What part of the flower ripens to become the fruit? | Ovary |
| What part of the flower ripens to become the seed? | Ovule |
| What are the steps of pollination? | 1. the pollen grain adheres to the stigma where it germinates 2. The pollen tube grows down the style 3. The sperm cells move through the pollen tube to the ovule |
| What are the two types of pollination syndromes? | 1. Wind pollination 2. Insect (animal) pollination |
| Do wind pollinated plants have big, showy flowers? | No. |
| What parts might wind pollinated plants lack? | corolla and/or calyx |
| Do insect (animal) pollinated plants have big, showy flowers? | Yes! Visual cues, chemical scents, and food rewards like pollen/nectar attract insects and animals. |
| Fertilization: what is it? | When the pollen germinates and the sperm and egg cells unite |
| What type of fertilization is unique to angiosperm? | Double fertilization |
| What happens in double fertilization? | Two sperm cells from the pollen fertilize two different cells in the ovule The egg and one sperm cell produce the plant embryo The other sperm cell unites with another cell to produce endosperm, which provides nutrients |
| Why are fruits and seeds important to the plant? | They allow the plant to send their offspring to a new location which reduces competition with the parent plant and spreads the species |
| What is the pericarp? | It is the ovary wall |
| What are the five types of fruits? | 1. Simple fleshy fruits 2. Dry Fruits 3. Aggregate fruits 4. Multiple fruits 5. Accessory fruits |
| There are two types of dry fruits. Which one splits open at maturity and which does not? | Dehiscent split open at maturity while indehiscent do not |
| Which type of fruits develop when many ovaries in a single flower fuse to ripen? | Aggregate fruits |
| Which type of fruits develop from the fusion of the ovaries of many flowers on the same plant? | Multiple fruits |
| Which type of fruits develop from the enlargement of a non-floral part, such as the receptacle? | Accessory fruits |
| What are the three mail parts of the seed? | 1. Seed Coat 2. Nutrient (endosperm or cotyledons) 3. Embryo |
Created by:
brennera
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