Reproductive Systems and Plant Development

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Questions and Answers

What are the gonads for males and females?

  • Ovary; Testis
  • Testis; Ovary (correct)
  • Testis; Uterus
  • Penis; Vagina

What is the inner lining of the uterus called?

  • Endometrium (correct)
  • Placenta
  • Chorion
  • Cervix

During which phase of the ovarian cycle does FSH promote the development of estrogen-secreting follicles?

  • Follicular phase (correct)
  • Ovulatory phase
  • Luteal phase
  • Menstrual phase

What is the name of the second half of the ovarian cycle?

<p>Luteal phase (D)</p> Signup and view all the answers

Which of the following is mismatched regarding hormone levels?

<p>Menstruation - Follicle-stimulating hormone (FSH) peaks (D)</p> Signup and view all the answers

How does a birth control pill primarily function?

<p>Inhibiting FSH and LH production (C)</p> Signup and view all the answers

What happens during the luteal phase of the ovarian cycle?

<p>Progesterone output peaks (A)</p> Signup and view all the answers

Why is the endometrium important during pregnancy?

<p>It allows embryo implantation (D)</p> Signup and view all the answers

What effect do estrogen and progesterone have on FSH and LH production?

<p>They exert negative feedback on the production of FSH and LH. (A)</p> Signup and view all the answers

How do plant sperm reach the ovule in flowering plants?

<p>The sperm are delivered by a pollen tube. (A)</p> Signup and view all the answers

Which structure is incorrectly matched with its function in flowering plants?

<p>Filament - produces pollen (A)</p> Signup and view all the answers

Where do microspores develop into pollen grains in a flowering plant?

<p>Anther (A)</p> Signup and view all the answers

In double fertilization, what are the products formed within the ovary?

<p>A 2n zygote and a 3n endosperm (A)</p> Signup and view all the answers

During alternation of generations in plants, what does the diploid sporophyte produce?

<p>Spores (A)</p> Signup and view all the answers

In the alternation of generations, what does the haploid gametophyte produce?

<p>Gametes that form a new sporophyte (D)</p> Signup and view all the answers

What does a bisexual flower contain?

<p>Both stamens and carpels (C)</p> Signup and view all the answers

In a eudicot seed, what does the zygote develop into?

<p>Embryo (D)</p> Signup and view all the answers

Which method of seed dispersal is most commonly associated with fleshy fruits?

<p>Eaten by animals and seeds passed through feces (C)</p> Signup and view all the answers

Where are the male and female gametophytes produced in flowering plants?

<p>Within flowers (B)</p> Signup and view all the answers

Where does double fertilization occur in flowering plants?

<p>Ovule (A)</p> Signup and view all the answers

Flashcards

Male gonad

The male reproductive gland, producing sperm.

Female gonad

The female reproductive gland, producing eggs.

Endometrium

Inner lining of the uterus.

Follicular phase

First half of ovarian cycle, estrogen production.

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Luteal phase

Second half of ovarian cycle, progesterone production.

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FSH (follicle-stimulating hormone)

Hormone that promotes follicle development.

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Birth control pill effect

Inhibits FSH and LH production to prevent ovulation.

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Ovulation

Release of an egg from the ovary.

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Plant sperm delivery

Plant sperm are delivered to the ovule by a pollen tube, not swimming in water or carried by wind or insects.

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Incorrect structure-function match

The filament in a flower produces pollen, not a pollen grain, which is produced within the anther

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Pollen grain development location

Pollen grains develop from microspores within the anther.

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Double fertilization outcome

Double fertilization produces a 2n zygote and a 3n endosperm within the ovary.

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Alternation of generations

The diploid sporophyte produces spores that grow into the haploid gametophyte.

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Gametophyte production

The haploid gametophyte produces gametes, which combine to produce a new diploid sporophyte.

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Bisexual flower

A bisexual flower contains both stamens and carpels.

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Eudicot seed embryo part

In a eudicot seed, the zygote develops into the embryo and the endosperm nourishes it.

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Fleshy fruit dispersal

Fleshy fruits are often dispersed by animals eating the fruit, passing the seeds in their feces.

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Flowering plant gametophytes location

The male and female gametophytes of flowering plants are produced in the flower (specifically the anther and ovule).

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Double fertilization site

Double fertilization takes place within the ovule of a flower.

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Hormonal feedback on FSH and LH

Estrogen and progesterone exert negative feedback on FSH and LH, preventing follicle development and ovulation if present in high levels.

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Sporophyte and gametophyte

The sporophyte (diploid) produces spores that develop into the gametophyte (haploid). In contrast, the gametophyte produces gametes that fuse to create the new sporophyte.

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Microspore development

Microspores mature into pollen grains within the anther of a flower

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Double Fertilization

Double fertilization combines a female gamete with two male gametes in flowering plants forming a zygote and endosperm

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Study Notes

Reproductive Systems

  • Male gonad: Testis
  • Female gonad: Ovary

Uterine Lining

  • Endometrium: Inner lining of the uterus. Embryo implantation occurs here.

Ovarian Cycle

  • Follicular Phase (first half): Follicle-stimulating hormone (FSH) stimulates estrogen-secreting follicles.

  • Luteal Phase (second half): Progesterone production peaks.

Hormonal Regulation

  • Ovulation: Triggered by a surge in luteinizing hormone (LH).

  • Birth control pills: Inhibit FSH and LH production, preventing ovulation.

Plant Reproduction

  • Plant sperm delivery: Pollen tubes deliver sperm to ovules.

  • Flower Structure

    • Sepal: Protects the flower.
    • Petal: Attracts pollinators.
    • Filament: Supports the anther.
    • Anther: Produces pollen (microspores).
    • Stigma: Allows pollen to adhere.
    • Ovary: Contains the female gametophyte.

Plant Development

  • Microspore development: Occurs in the anther

  • Double Fertilization:

    • Zygote: 2n (diploid)
    • Endosperm: 3n (triploid), provides food for the embryo.
  • Alternation of generations:

    • Sporophyte (diploid): Produces spores.
    • Gametophyte (haploid): Produces gametes
  • Bisexual Flower: Contains both stamens and carpels.

  • Seed Structure:

    • Embryo: Develops from the zygote.
    • Stored food: Comes from the endosperm
  • Fruit Dispersal: Fleshy fruits are often dispersed by animals consuming the fruits and passing the seeds.

  • Gametophyte location: Gametophytes develop within the flower.

  • Double fertilization site: Ovule

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