Biology NEET - XII: Chapter 1- Reproduction in Organisms
This flashcard set covers Chapter 1 – Reproduction in Organisms for NEET Biology Class XII. It includes key concepts like life span, modes of reproduction, and essential True/False questions for quick revision.
The life spans of organisms are correlated with their sizes. True or false?
False. The life spans of organisms are not correlated with their sizes.
Key Terms
The life spans of organisms are correlated with their sizes. True or false?
False. The life spans of organisms are not correlated with their sizes.
Clones are only genetically similar. True/false?
False. Clones are both morphologically and genetically similar organisms.
How many layers does the cyst wall of amoeba have?
3
What are the many minute amoeba formed by multiple fission called?
Pseudopodiospores
How is dahlia cultivated vegitatively?
Through the nodes present on its modified stem
What grows from the nodes of tubers?
Roots and new plant
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| Term | Definition |
|---|---|
The life spans of organisms are correlated with their sizes. True or false? | False. The life spans of organisms are not correlated with their sizes. |
Clones are only genetically similar. True/false? | False. Clones are both morphologically and genetically similar organisms. |
How many layers does the cyst wall of amoeba have? | 3 |
What are the many minute amoeba formed by multiple fission called? | Pseudopodiospores |
How is dahlia cultivated vegitatively? | Through the nodes present on its modified stem |
What grows from the nodes of tubers? | Roots and new plant |
Do annual plants show clear cut vegetative, reproductive and senescent phases? | Yes |
Do biennial plants show clear cut vegetative, reproductive and senescent phases? | Yes |
Do perennial plants show clear cut vegetative, reproductive and senescent phases? | No |
How many times does bamboo flower in its lifetime? | Once |
Neelkuranji flowers once in every | 12 years |
What are responsible for changes between the three phases of life in animals and plants? | Hormone |
Which term is used to denote bisexual condition in fungi? | Homothallous |
Which term is used to denote bisexual condition in plants? | Monoecious |
Are cucurbits monoecious or dioecious? | Monoecious |
Is coconut monoecious or dioecious? | Monoecious |
Is date palm monoecious or dioecious? | Dioecious |
Which cells in diploid organisms undergo meiosis? | Meiocytes (gamete mother cell) |
What is the universal event in life cycle of all sexually reproducing organism? | Formation of a zygote |
What is the vital link that ensures the continuity of species between organisms of one generation and the next? | Zygote |
What is the life span of Mayfly? | 1 day |
What is the unit of clone (of an organism)? | Ramet |
What kind of binary fission is found in euglena? | Longitudinal |
What kind of binary fission is found in paramoecium? | Transverse |
What kind of binary fission is found in ceratium? | Oblique |
What is the form of asexual reproduction in which multinucleated cell divides into many multinucleated daughter cells called? | Plasmotomy |
How many nucleus are found in the daughter cells formed through plasmotomy? | Many |
Plasmotomy is found in | Giant amoeba, opalina |
Strobilation is a modified form of | Transverse fission |
What are ring like structures present in organisms undergoing strobilation called? | Ephyra |
What is the segmented body formed through strobilation called? | Strobila |
Strobilation is found in | Jelly fish, tape worm |
Internal budding is found in | Sponges |
Are zoospores formed in zoosporangium endogenously or exogenously? | Endogenously |
Do zoospores have cell wall? | No |
Chlamydospores are formed from | Hyphal cells |
In what conditions are oidia found? | Excess water condtion |
Oidia are formed in which organisms? | Fungi |
Regeneration was first discovered in which organism? | Hydra |
Who discovered regeneration in organisms? | Abraham Trembly |
What should be the size of the fragment of hydra so that it can undergo fragmentation? | 1/6 mm |
Who coined the term apomyxis? | Winkler |
What is the vegatative propagule in artichoke? | Tuber |
What is the vegatative propaguale in banana? | Rhizome |
What is the modification of stem found in chrysanthemum? | Sucker |
What is the modification of stem found in mint? | Sucker |
What is the modification of stem found in strawberry? | Stolon |
What is the modification of stem found in pineapples? | Bulbils |
What is the modification of stem found in oxalis? | Bulbils |
Which cuttings are used for the horticulture of lemon? | Root cuttings |
Which cuttings are used for the horticulture of apple? | Root cuttings |
Which cuttings are used for the horticulture of strawberry? | Root cuttings |
Which cuttings are used for the horticulture of rose? | Stem cuttings |
Which cuttings are used for the horticulture of sugarcane? | Stem cuttings |
Which cuttings are used for the horticulture of begonia? | Leaf cuttings |
Which cuttings are used for the horticulture of bryophillum? | Leaf cuttings |
In a stem grafting, which part is the stock? | Root system |
Stem grafting cannot be performed in which angiosperms? | Monocots |
In bud grafting, the scion is the | Bud |
Which cuttings are used in layering? | Root cuttings |
In layering, advenitious roots are made to grow from | Soft stems (basal shoot branches) |
Mund layering is practised in which plants? | Apple, pear, grape, strawberry, cherry |
Air layering is practised in which plants? | Litchi, guava, orange |
Ovoviviparity is found in | Sharks, rays, snakes, fishes, and insects |
Kangaroos are | | (1) Viviparous (2) Oviparous (3) Ovoviviparous (4) A distinct category 1) Viviparous |
What is the difference between the division of micronucleus and macronucleus in paramoecium? | Micronucleus divides by mitosis. | Macronucleus divides by amitosis. |
Complete parthenogenesis is found in | Rock lizard |
What is the type of parthenogenesis in which only males are produced called? | Arrhenotoky |
What is the type of parthenogenesis in which only females are produced called? | Thallotoky |
WHat type of parthenogenesis is found in honey bees? | Arrhenotoky |
What is endogamy? | Gametes which fuse belong to the same parent |