Table of Contents
- 1 How are the structures of seed and pollen cones Similar How are they different?
- 2 What are similarities and differences between cones and flowers?
- 3 What is the difference between seed and cone?
- 4 What is the difference between a pollen cone and ovulate cone?
- 5 How are an apple and a pine cone alike?
- 6 What is present inside the ovule?
- 7 Are pollen cones male or female?
- 8 Do cones have pollen?
- 9 What is the difference between pollen cones and cones?
- 10 What are the different types of cones in a conifer tree?
- 11 How do conifers pollinate themselves?
How are the structures of seed and pollen cones Similar How are they different?
Pollen cones are characteristically smaller and wider than seed cones. Pollen cones tend to whither and die once the pollen within the cones has been released to fertilize the seed cones. Seed cones tend to develop higher up in the tree to aid in dispersal once the seeds are pollinated.
What are similarities and differences between cones and flowers?
Flowers and cones have quite different structures. Cones when mature have an almost woody texture; they are elongated and are made up of scales. Flowers have colorful petals, sepals (which are leaves below the petals), and both male and female reproductive portions, called the stamens and pistils, respectively.
What are the similarities and differences between the female cone scale and the male cone?
They have a seed in their open scales that becomes a new tree when it gets pollen from a male cone. Male cones are a lot smaller than female cones and their scales aren’t as open. Each scale in a male cone contains the pollen that can spread to a female cone to make a seed.
What is the difference between seed and cone?
The difference between cone-bearing plants and fruit-bearing plants is that cone-bearing plants, called gymnosperms, develop a seed that is part of a cone structure. A gymnosperm seed is not protected inside a fruit, as is the case with fruit-bearing plants that came later.
What is the difference between a pollen cone and ovulate cone?
One type of cone is the small pollen cone, which produces microspores that subsequently develop into pollen grains. The other type of cones, the larger “ovulate” cones, make megaspores that develop into female gametophytes called ovules. This is the cone that produces pollen.
How would you identify between the cone scale from a seed cone vs a pollen cone?
Seed cones are most helpful in identifying a tree because they are durable and stay on the tree or the ground beneath the tree for a long time. Pollen cones, which are usually much smaller and less conspicuous, tend to whither up after releasing their pollen. Pollen from conifers is typically a fine yellow dust.
How are an apple and a pine cone alike?
They both hold seeds. 4. How are an apple and a pinecone alike? They both hold seeds.
What is present inside the ovule?
Answer: Ovules are structures that give rise to and contain the female reproductive cells. They are small, bead-like structures inside the ovary. The ovules develop into a seed when fertilized.
Why are female cones different than male cones?
male pine cones have close-knit “scales,” that hold pollen sacks, the pollen acting as air-borne “sperm;” female pine cones have looser scales and lie lower on a tree to make pollination easier.
Are pollen cones male or female?
The familiar woody cone is the female cone, which produces seeds. The male cone, which produces pollen, is usually herbaceous and much less conspicuous even at full maturity.
Do cones have pollen?
What is a pollen cone?
Sexual reproduction in gymnosperms follows a familiar pattern. Pollen, which contains the male sex cells, is produced in pollen cones, which are essentially miniature branches with modified leaves called scales that house the male reproductive organs. Mature pollen is shed and carried away by the wind.
What is the difference between pollen cones and cones?
Pollen cones, which are usually much smaller and less conspicuous, tend to whither up after releasing their pollen. Pollen from conifers is typically a fine yellow dust. Most people refer to seed cones / female cones as just “cones.”
What are the different types of cones in a conifer tree?
1 Pollen Cones. Pollen cones are characteristically smaller and wider than seed cones. 2 Seed Cones. Seed cones are commonly used to identify tree type because they remain on or beneath the tree for a longer period of time. 3 Arils. Some conifers have neither pollen nor seed cones. 4 Scientific Classification and Seed Dispersal.
How does pollen reach the ovules of a plant?
Pollen (from the pollen cones / male cones) has to reach the ovules (in the seed cones / female cones) in order to fertilize them, creating seeds. Typically, seeds are tucked under the scales of seed cones.
How do conifers pollinate themselves?
Some conifers have both cone types on the same tree, making it possible for the tree to pollinate itself. Cross pollination occurs when one tree produces only seed cones and therefore must be fertilized by pollen drifting to the seed cones from pollen cones located on other nearby trees.