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Lab 5 - Diversity of Plants with Seeds

Q: What is the arrangement of vascular bundles like in monocots?

In monocots , the vascular bundles are arranged in a scattered pattern throughout the stem .

Q: What is the arrangement of vascular bundles like in dicots?

In dicots , vascular bundles are: Arranged in a ring formation. Separated by cambium . Contains both xylem and phloem .

Q: What is the green plant we see in seed plants?

The green plant we see is the sporophyte , just as it is for the vascular plants without seeds.

33 important questions on Lab 5 - Diversity of Plants with Seeds

How many stamens does a lily have?

The lily has six stamens.

What is the arrangement of vascular bundles like in monocots?

In monocots, the vascular bundles are arranged in a scattered pattern throughout the stem.

What is the arrangement of vascular bundles like in dicots?

In dicots, vascular bundles are:

Arranged in a ring formation.
Separated by cambium.
Contains both xylem and phloem.

What do pines have to undertake pollination?

Pines have separate sex cones to undertake pollination, although both sexes are on the same tree.

What are the sepals and petals like in many plants?

They are green and leaf like, where the petals are showy and colourful

What do male cones release in spring?

The male cones release copious quantities of pollen in spring.

What does each stamen consist of?

Each stamen consists of a filament and a pair of pollen sacs to form the anther.

What are vascular bundles?

Vascular bundles are the parts of the root and stem cross sections that have the xylem cells to conduct water upwards and the phloem cells to conduct sugars all around the plant.

What happens to ovulate cones months after pollination?

Months later, the ovulate cones will develop into the firm pine cones with which most people are familiar.

Where is the female gametophyte carried?

The female gametophyte within the ovule is carried on an ovuliferous scale within the female pine cone and is about half the size of the ovule.

What is the green plant we see in seed plants?

The green plant we see is the sporophyte, just as it is for the vascular plants without seeds.

What are the components of the pistil in a lily flower?

The pistil consists of the stigma, style, and the ovary.

What is the gametophyte of the seed plant?

The gametophyte of the seed plant is microscopic and unisexual.

How many lobes does the stigma have?

The stigma has three lobes.

What is the male gametophyte in seed plants?

The male gametophyte is the pollen grain.

How many compartments does the ovary have and what do they contain?

The ovary has three compartments, each with many ovules.

What is the central part of the ovule in seed plants?

The female gametophyte is the central part of the ovule, which will later develop into the seed.

How is fertilization in angiosperms different from gymnosperms?

In gymnosperms, fertilization of the egg nucleus occurs a year after pollination. In angiosperms, these events occur in the same season in a process known as double fertilization.

What encloses the female gametophyte in seed plants?

The female gametophyte is enclosed within a maternal tissue called the integument, to form the ovule.

What happens when pollen lands on the sticky stigma of a flower?

When pollen lands on the sticky stigma of a flower, a pollen tube grows, this tube will deliver sperm to the egg, which is inside the ovary.

What was a major advance for plants in terms of evolution?

The evolution of the seed was a major advance for plants, because it provides the sporophyte with an enhanced likelihood of survival.

What does one sperm fertilize and what does the other sperm fertilize in angiosperms?

One sperm fertilizes the egg and the other fertilizes the central cell which forms the endosperm.

How do seed plants disperse instead of as a haploid spore?

Seed plants disperse as a diploid embryo, which is a multicellular resting stage that follows the zygote within the life cycle.

What are cycad leaves similar to, and how are they structured?

Cycads are similar in appearance to ferns. The leaves arise from a central stem and are divided into many leaflets. Cycads have separate male and female plants that produce cones directly on the central stem.

What benefits does the embryo have in seed plants?

The embryo also benefits from being able to access food resources in the seed.

Into what does the zygote develop?

The zygote develops into the embryo which will grow into the new plant.

Describe the characteristics of a ginkgo tree.

Ginkgo is a tree with leaves that are flat, thin and divided into two wedge shaped parts. The ginkgo has separate male and female plants. The seeds hang from the branches. The ginkgo seed has a fleshy outer layer that looks like a fruit, but is not a fruit.

How is the seed protected in seed plants?

The seed is protected from adverse conditions by the seed coat and by a dormant condition that allows passage through a dry period or otherwise unfavorable conditions.

How are the stems and seeds of Mormon tea plants described?

Mormon tea plants have photosynthetic stems that are ridged. The leaves are reduced to scales along the stems. The plants produce seeds inside scaly bracts that resemble flowers, but are not flowers.

What defines angiosperms in terms of seed development?

The majority of seed plants are angiosperms, which means vessel-seeded. Unlike the conifers and other gymnosperms with naked seeds, angiosperms have seeds that develop inside a vessel known as the ovary. At maturity, the ovary becomes the fruit that surrounds the seeds. As well as ovules within an ovary that become the seeds within the fruit, the angiosperms also have flowers.

Where is the seed carried in conifers?

For the conifers, the seed is carried on a scale within the cone.

What happens to the cones at maturity in conifers?

At maturity, the cones open to release the seeds.

Name three other groups of gymnosperms besides conifers.

There are three other groups of gymnosperms: cycads, the ginkgo tree, and the gnetophytes.

The question on the page originate from the summary of the following study material:

BFI - Laboratory Assignments

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