Certain marine brown algae contain algin, which is commercially important. Algin is a type of:
Carrageenan
Agar
Floridean starch
Phycocolloid
Related Questions
In organisms with a haplontic life cycle, when does meiosis occur?
Immediately after zygote formation
During gamete formation
After the first mitotic division of the zygote
During sporophyte development
The storage carbohydrate in Rhodophyta is similar in structure to which of the following pairs?
Amylose and Cellulose
Amylopectin and Glycogen
Starch and Chitin
Inulin and Mannitol
Read the given explanation and select the correct option Explanation A: Each group of Algae has a characteristic colour Explanation R: Each group of Algae shows predominance of One pigment
Both A and R are true and R is the correct explanation of A
Both A and R are true but R is NOT the correct explanation of A
A is true but R is false
A is false but R is true
Which algal division is characterized by the presence of a 'peculiar' type of nuclear division and the absence of flagellated stages in its life cycle?
Chlorophyta
Phaeophyta
Rhodophyta
Xanthophyta
Consider the following statements regarding reproduction in class-Chloropyceae.
I. Asexual reproduction is mainly by flagellated zoospores produced in zoosporangia.
II. The sexual reproduction shows considerable variation in the type and formation of sex cells and it may be isogamous, anisogamous and oogamous.
Which of the statements given above are correct?
Only I
Only II
I and II
None of these
In which of the following brown algae is the gametophyte generation significantly reduced?
Fucus
Ectocarpus
Dictyota
Polysiphonia
Which statement regarding the comparison of mitosis and meiosis is FALSE?
Meiosis results in haploid cells.
Mitosis produces genetically different cells.
Meiosis involves two rounds of cell division.
Mitosis is used for growth and repair.
Which of the following genera contains only unicellular algae?
Chlamydomonas
Ulothrix
Laminaria
Chara
Carrageenan, a sulfated polysaccharide, is primarily obtained from which algal group?
Phaeophyta
Rhodophyta
Chlorophyta
Chrysophyta
If an organism undergoes zygotic meiosis, what is the ploidy of the dominant stage in its life cycle?
Haploid
Diploid
Triploid
Tetraploid
