Four potted plants (I,II, III, and IV) of a short day plant, which has the crictical period of 14 hours, are taken and exposed to light for different time periods. The light periods given are listed in the table.
`|{:("Potted plant","Photoperiod"),(I,10hrs),(II,15hrs),(III,16hrs),(IV,20 hrs):}:|`
Which potted plant will show flowering after exposure to light?
Four potted plants (I,II, III, and IV) of a short day plant, which has the crictical period of 14 hours, are taken and exposed to light for different time periods. The light periods given are listed in the table.
`|{:("Potted plant","Photoperiod"),(I,10hrs),(II,15hrs),(III,16hrs),(IV,20 hrs):}:|`
Which potted plant will show flowering after exposure to light?
`|{:("Potted plant","Photoperiod"),(I,10hrs),(II,15hrs),(III,16hrs),(IV,20 hrs):}:|`
Which potted plant will show flowering after exposure to light?
A
I
B
II
C
III
D
IV
Text Solution
Verified by Experts
The correct Answer is:
A
A short day plant (SDP) which has a critical period of 14 hours, will flower only if it is provided a continuous period of darkness of 14 hours, which has been given to the potted plants, more amounts of light periods are being given and thus the dark periods have been reduced to below 14 hours.
Similar Questions
Explore conceptually related problems
Identify a pair of the following plants which show modification of axillary buds into tendrils and hooks respectively. i. Hugoia ii. Duranta iii. Passiflora iv. Dioscorea
Study following statements regarding the preparation of herbarium sheets. (i) Plant should be collected in flowering stage. (ii) Every detail regarding the plant such sa locality, ecological conditions, vegetative and floral characters, etc. should be noted. (iii) Plants are evenly pressed by unfolding all the plant parts between blotting papers (or newspapers) with the help of plant pressers. (iv) Blotting papers need not be changed until the plant gets dried. (v) After drying, the plant specimen is carefully mounted/pasted on the herbarium sheets. (vi) The herbarium sheet is labelled on the lower right hand corner representing the number of plant specimen, data of collection, etc. Which of the above statements is/are correct ?
The diagram shows the structure of a fungal cell with different parts labelled as A,B,C and D. Which of the following statements are true with regard to the fungal cell structive? (i) A contains mucopolysaccharides which are also present in exoskeleton of insects and crustaceans. (ii) D are usually more than one in number in case of aseptate hyphae. (iii) Carotenes and xanthophylls are present in C, which harvest light energy for photosynthesis. (iv) B is the reverse food material, usually stored in the form of starch and oil.
The given statements describe a group of organisms. (i) Instead of a cell wall they have a protein rich pellicible making their body flexible. (ii) They have 2 flagella, a short and a long one. (iii) They show mixotrophic nutrition (iv) They are connecting link between plants and animals. which of the following groups is referred to here?
From the statements given below, choose the option that are true for a typical female gametophyte of a flowering plant. (i) It is 8-nucleate and 7-celled at maturity. (ii) It is free-nuclear during the development. (iii) It is situated inside the integument but outside the nucellus. (iv) It has an egg apparatus situated at the chalazal end.
In the tropical rainforest, the majority of trees have showy animal-pollinated flowers. In temperate forests the majority of trees are wind pollinated. Which factors best explain these contrasting patterns ? (i) Wind is rare in tropical forests. (ii) Because of high species diversity in the tropics, individuals of trees species are often widely separated making wind an inefficient means of pollen dispersal. (iii) More opportunities for coevolved mutualisms exist in tropical forests because of the high diversity of animal species. (iv) Trees in tropical forests are mostly evergreen and year-round leaf canopies impede pollen dispersal by wind. (v) Flowering in tropical forests occurs over a short period of time when wind is absent. (a) (i) , (ii) and (v) (b) (i),(iii) and (v) (c) (ii), (iii) and (iv) (d) (ii) and (iv)
Fill up the blanks in the following paragraph by selecting the correct option A. overset("i")("___") methods work on the principle of avoiding chances of ovum and sperms meeting B. overset("ii")("___") is one such method in which the couples avoid coitus from day 10 to 17 of the menstrual cycle C. overset("iii")("___") is another method in which the male partner withdraws his penis from the vagina just before ejaculation so as to avoid insemination D. overset("iv")("___") method is based on the fact that ovulation and therefore the cycle do not occur during the period of intense loctation following parturition.
Read of the following statements regarding poultry farm management. (i) Poultry birds include chicken, ducks, turkey and geese. (ii) Brooder house should be crowd-free, rain proof and protected from predators. (iii) The most common egg-type variety used for commercial production throughout the world is single comb white leghorn and its various strains. (iv) Approximately 14 to 16 hours of light including daylight are required for optimum egg production. Which of the above statements are correct ?
Given diagram illustrates an evolutionary tree. Which of the following statements can be deduced from the given evolutionary tree? (i) The ancestral eukaryotes were anaerobic. (ii) All eukaryotes were anaerobic. (ii) All eukaryotes possess mitochondria. (iii) Eubacteria and Eukaryota have a common ancestor whereas Archebacteria have a unique and independent origin. (iv) Mitochondria and chloroplasts have similar genomes. (v) Mitochondria are presents in plants, animals and fungi. (vi) chloroplasts and mitochondria arose asendosymbionts. (vii) Fungi and animals lost chloroplasts during evolution.
Read the following statements with one or two blanks in each one of them. (i) A genus containing more than one species is called ______ genus, e.g., _______ . (ii) _______ is a collection of dried, pressed and preserved plants mounted on _________ sheets, properly labelled, systematically arranged and available for reference study. (iii) Living fossils are ancient organisms persisting in modern times _______ gradual morphological changes. (iv) A ________ is compreshensive treatise of a taxonomic group, generally a genus or a family, providing all taxonomic data related to that group. Which of the following correctly fills any two of the above statements ?
Recommended Questions
- Four potted plants (I,II, III, and IV) of a short day plant, which has...
Text Solution
|
- Cabbage is a biennial plant which produces flowers in second year of g...
Text Solution
|
- Given figure shows the effect of interruption of skotoperiod (dark per...
Text Solution
|
- When the dark period of short day plants is intrrupted by a brief expo...
Text Solution
|
- One set of plants exposed to 12 hr day and 12 hr night llowered. The o...
Text Solution
|
- For the experiment 'Light is necessary for photosynthesis', the potted...
Text Solution
|
- Select the correct statement related to flowering in plants. I. Some p...
Text Solution
|
- Nicotiana tobacum, a short day plant , when exposed toi more than crit...
Text Solution
|
- Cabbage is a biennial plant which produces flowers in second year of g...
Text Solution
|