Tag: the seed
Questions Related to the seed
Plants with single whorl of perianth are placed under
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Class - Monocot, Sub class - Monochlamydeae
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Class - Dicot, Series - Monochlamydeae
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Class - Dicot, Sub class - Monochlamydeae
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Class - Monocot, Sub class - Gamopetalae
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Class - Dicot, Series - Bicarpellatae
Monochlamydeous flower has only one accessory whorl present (perianth). For example, Polygonaceae and Liliaceae.
The only dicot family bearing six cotyledons is
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Leguminosae
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Compositae
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Orchidaceae
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Loranthaceae
The only dicot family bearing six cotyledons is Loranthaceae. The Loranthaceae are a family of flowering plants, which has been universally recognized by taxonomists. It consists of about 75 genera and 1,000 species of woody plants, many of them hemiparasites, all of them except three having the mistletoe habit.
A dicot exalbuminous seed is
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Pea
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Ester
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Rice
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Wheat
Pea is a dicot exalbuminous seed. In the non-endospermic dicotyledons the endosperm is absorbed by the embryo as the latter grows within the developing seed and the cotyledons of the embryo become filled with stored food. At maturity, seeds of these species have no endosperm and are also referred to as exalbuminous seeds. The exalbuminous seeds include the legumes such as beans and peas.
Therefore, the correct answer is option A.
Fruit of a groundnut is
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Lomentum
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Siliqua
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Caryopsis
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Nut
The fruit of a groundnut is a lomentum. In botanical terms, nut specifically refers to indehiscent fruit, the peanut is not technically a nut, but rather a legume and its fruit is a lomentum. Lomentum is a dry fruit of certain leguminous plants, having constrictions between the seeds and separating at maturity into one-seeded segments. A loment (or lomentum) is a type of indehiscent legume fruit that breaks apart at constrictions occurring between segments, so that each segment contains one seed. It is a type of schizocarp.
Thus, the correct answer is option A.
Some plants of Angiosperms are called as dicotyledons, because their seedlings contain
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Three cotyledons
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Two cotyledons
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Many cotyledons
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Four cotyledons
Dicots have floral parts in multiples of four or five, and their seeds contain two cotyledons. The cotyledons usually absorb the food from the endosperm first, and then provide the food for the embryo.
Bentham and Hooker classified dicots into
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Polypetalae, gamopetalae and glumiflorae
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Polypetalae, gamopetalae and monochlamydae
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Achlamydae, diclamydeae and metachlamydae
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Archichlamydae, sympetalae and apetalae
- The Bentham and hooker classification system compromises of the following main groups in Class DICOTYLEDONES:
- POLYPETALE
- GAMOPETALAE
- MONOCHLAMYDAE.
- Hence, Bentham and Hooker classified dicots into Polypetalae, gamopetalous and monochlamydae.
- So, the correct answer is 'Polypetalae, gamopetalae and monochlamydae'.
The active growing region in a dicot embryo which forms shoot is
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Epicotyl
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Cotyledon
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Coleoptile
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Plumule
The active growing region in a dicot embryo which forms shoot is the plumule. The plumule is the young shoot of a plant embryo above the cotyledons, consisting of the epicotyl and often of immature leaves. The young shoot or plumule, is said to be negatively geotropic, because it moves away from the soil it rises by the extension of either the hypocotyl.
Thus, the correct answer is option D.
The botanical name of ground nut is
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Cicer arietinum
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Glycine max
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Arachis hypogea
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Lens esculentus
The peanut or groundnut (Arachis hypogaea) is a species in the family Fabaceae. The peanut was probably first domesticated and cultivated in the valleys of Paraguay. It is an annual herbaceous plant growing 30 to 50 cm tall. Because, in botanical terms, nut specifically refers to indehiscent fruit, the peanut is not technically a nut, but rather a legume. Peanuts are often served in a similar manner to true nuts in many Western cuisines, and are often referred to as a nut in common English.
Thus, the correct answer is option C.
Root cap in dicots is formed from
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Protoderm
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Ground meristem
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Calyptrogen
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Procambium
Protoderm is a type of primary meristem which has developed from apical meristem. It forms the outermost epidermis which is responsible for root cap formation.
Thus, the correct answer is option A.
Eustele is present in
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Bryophytes
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Pteridophytes
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Dicots
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None of the above
Vascular tissue in dicot stem consists of many vascular bundles which are arranged in the form of broken ring known as eustele.