Table of Contents
- 1 Why does Ulva have isomorphic alternation of generation?
- 2 What is isomorphic in plants?
- 3 Are bryophytes isomorphic?
- 4 Is Ulva a Thallophyta?
- 5 What is isomorphic life cycle?
- 6 What is difference between gametophyte and sporophyte?
- 7 What is triphasic life cycle?
- 8 Is Ulva Lactuca a protist?
- 9 What is the body form of an ULVA?
- 10 How is reproduction and life cycle of Ulva differ?
Why does Ulva have isomorphic alternation of generation?
In ulva the haploid zoospores give rise to the gametophytes. Both kinds of plants are morphologically identical and therefore ulva shows an isomorphic alternation of generations.
What is isomorphic in plants?
In an isomorphic alternation of generations (found in some algae, for example) the sporophyte and gametophyte are morphologically similar or identical; in a heteromorphic alternation of generations they are dissimilar (e.g. in mosses the gametophyte is the dominant and conspicuous generation, whereas in higher plants …
What is isomorphic and heteromorphic alternation of generation?
Species with heteromorphic life cycle have a large multicellular body in one generation but have a microscopic body in the other generation of a year. In contrast, isomorphic species have both diploid and haploid life forms with very similar morphology, having more than two generations in a year.
Are bryophytes isomorphic?
In most, the generations are homomorphic (isomorphic) and free-living. All bryophytes, i.e. liverworts, mosses and hornworts, have the gametophyte generation as the most conspicuous.
Is Ulva a Thallophyta?
Ulva is the example of which division thallophyta. Ulva lactuca, also known by the common name sea lettuce, is an edible green alga in the family Ulvaceae.
What does Sporic life cycle mean?
The sporic life cycle is common algae and plants. The term sporic refers to the fact that spores are the result of meiosis. The sporic life cycle results from an alternation between a haploid and a diploid organism. These spores germinate and differentiate into haploid multicellular individuals known as gametophytes.
What is isomorphic life cycle?
Isomorphic type: In this type there are two exactly similar somatic phases (morphologically identical plants) showing alernaion of generations. Here the one phase is diploid (sporophyte 2n) while the other haploid (gametophyte n).
What is difference between gametophyte and sporophyte?
The spore develops into a gametophyte which is haploid in nature. The gametophyte consisting of reproductive organs undergo mitosis to form haploid gametes….Difference Between Sporophyte and Gametophyte.
Sporophyte | Gametophyte |
---|---|
Sporophytes have two sets of chromosomes. | These have a single set of chromosomes. |
These reproduce asexually. | These reproduce sexually. |
What is the difference between Metagenesis and alternation of generation?
alternation of generations, also called metagenesis or heterogenesis, in biology, the alternation of a sexual phase and an asexual phase in the life cycle of an organism. The two phases, or generations, are often morphologically, and sometimes chromosomally, distinct. Life cycle of moss.
What is triphasic life cycle?
The triphasic life cycle includes an alternation of two diploid or sporophyte generations. There are two diploid phases and one haploid phase. No motile stage occurs during the entire life of red algae. The spores and gametes are transported by the water in a passive manner.
Is Ulva Lactuca a protist?
Ulva lactuca Linnaeus, a green alga in the Division Chlorophyta, is the type species of the genus Ulva, also known by the common name sea lettuce….Ulva lactuca.
Domain: | Eukaryota |
---|---|
Kingdom: | Protista |
Phylum: | Chlorophyta |
Class: | Ulvophyceae |
Order: | Ulvales |
What’s the difference between a gametophyte and a Ulva?
Ulva is isomorphic Sporophyte and gametophyte are identical in appearance In plants sporophyte and gametophyte are dissimilar The stages are named according to their reproductive products Gametophyte produces gametes Sporophyte produces spores Both gametes and spores are flagellated Their flagellated spores are called zoospores (usual)
What is the body form of an ULVA?
Body Form of Ulva 2-cell thick Broad body [thallus or thalloid body] No stipe Small holdfast Some cells at base are elongated for attaching to bottom Significance of Thalloid body Form All cells photosynthesize Each requires oxygen and water and sunlight
How is reproduction and life cycle of Ulva differ?
Reproduction and Life Cycle of Ulva Alternation of generation Two multicellular stages in their life cycle Differ in ploidy Sporophyte is diploid; gametophyte is haploid Ploidy refers to the number of chromosomes in the nucleus Diploid means two complete sets of chromosomes(2n)
When does reduction division take place in Ulva?
The reduction division takes place when the zoospores are formed. The haploid zoospores give rise to the gametophytes. Both kinds of plants are morphologically identical and therefore ulva shows an isomorphic alternation of generations.
https://www.youtube.com/watch?v=JRy05Calks8