Question

Phytochrome is found in
(a) Algae
(b) Fungi
(c) Vascular cryptogams
(d) Flowering plants

Answer 1

Phytochrome is defined as the photoreceptor which is present in the plants and helps in the detection of light which is sensitive to light in the red and far Red region of the visible spectrum and is activated through the far Red light. They are found in the organs of seed plants and free sporing plants

Complete answer:
Phytochrome is found in flowering plants as it is a blue-green pigment that is present in plants for the detection of light and regulates certain processes in plants such as seed germination, pigment synthesis and stem growth. It is present in various flowering plants where it helps in the regulation of the time of flowering based on the length of day and night. It performs signal transducing and enables the plant to acquire the information on the light environment that is used for the modulation of cellular processes in the plant and enables acclimation for the environmental changes.

Additional information:
Algae: Algae consists of photosynthetic eukaryotic organisms which include multiple species of distinct clades. They range from unicellular microalgae like chlorella to the diatomaceous multicellular forms such as the giant kelp which is a brown alga and can grow up to 50 meters. They consist of a mostly autotrophic and aquatic organism that lacks distinct cell and tissue types.
Fungi: Fungi consist of eukaryotic organisms which are a group of living organisms and have a non-vascular system with the cell wall made up of chitin. They do not consist of an embryonic stage and reproduce using spore formation.
Vascular cryptogams: They are defined as the first phylum of the plant Kingdom which can possess the vascular tissues that include xylem and phloem and are known as botanical snakes. They are mostly pteridophytes which are the seedless plants that help in the production of spores which are seen in their life cycle.

So, the correct answer is 'flowering plants’.

Note:
Some aspects of plant development are controlled by phytochromes which regulate the germination of seeds known as photoplasty and help with the synthesis of chlorophyll. They contribute towards the elongation of seedlings and the movement of leaves. The timing of flowering in the adult plants is done by the phytochromes.