Which of the following statement is correct for the pollen tube? (a) It shows chemotactic movement. (b) It shows only tip growth. (c) It is composed of three non-cellular zones. (d) It shows radial cytoplasmic streaming.

Q: What is the process in the plant life cycle that occurs within sporangium and results in spores?

A: Spores formed inside the sporangia disperse and give rise to Gametophyte upon growth. These…

Q: What is a resin canal, and what is its function? Where are resin canals found?

A: There are two types of Resin canals namely Normal resin canals that exist naturally in wood and…

Q: Which regions of pistil form fruits and seeds?

A: Flowers are the reproductive parts of the plant. These are not only involved in the process of…

Q: How many cellular nuclei  the pollen tube of angiosperms have? What is the ploidy of each of these…

A: The pollen type or the male gametophyte of angiosperms have three nuclei Two sperm nuclei One tube…

Q: What phase of the life cycle (gametophyte or sporophyte) produces Bryophyte spores? By what process…

A: Alternation of generation is defined as the alternation of multicellular diploid and haploid forms…

Q: What is auxillary bud in anatomy of flowering plant?

A: Plants are multicellular organisms, predominantly photosynthetic eukaryotes of the kingdom Plantae.…

Q: Is pollen grain germinate stigma on pollen tubes is it right?

A: Pollen grain and ovary are the male and female gametes respectively. The pollen grain helps to…

Q: Of the circled parts, indicate which numbers is/are parenchyma cells 1

A: There are various characters to be considered to indentify parenchyma cells. The major characters…

Q: The mature sporophyte starts to form sporangium that houses sporocyte (precursor cells in the…

A: The seedless vascular plants are those plants that will not produce seeds. They reproduce through…

Q: Bougainvillea, Sunflower, and hibiscus are Insertion of flower (if solitary) or insertion of…

A: Those organs of a plant that are defined for sexual reproduction are flowers. Flowers bear the seed…

Q: Label the following: calyx, petals, stamens, and pistil

A:

Q: In which type of germination do cotyledons remain below the soil and surfaces?

A: Hypogeal germination Hypogeal germination means the below-ground germination, where the cotyledons…

Q: What are Pollen grains ?

A: Introduction  Plants can reproduce naturally and artificially by various methods. Some lower plants…

Q: Of the circled parts, determine which is/are parenchyma cells 3 2

A: Introduction Plant tissue is made up of a group of similar cells that serve a specific purpose for…

Q: Mature sporophytes Look up the terms frond, rhizome, and roots, and define them. These three…

A: * Fronds means they are the leaves of ferns composed of a leafy blade and petiole. *Rhizomes are…

Q: How does pollen move from one flower to another, and why is thisprocess essential for sexual…

A: Mobility of pollen:                Flowering plants were in-need to get pollen mobilized from one…

Q: What is pollen grain?

A: Plant reproduction is the production of new offspring in plants, which can be accomplished by sexual…

Q: I found a few black walnut and I want to bonsai them. They are still covered in the green fleshy…

A: Black walnut or Juglans nigra is a deciduous tree and is native of North America. The fruit of black…

Q: Draw a well labeled diagram of longitudinal section of pistil showing pollen germination?

A: In a plant flower act as a reproductive part. Carpel is a female reproductive organ of flowering…

Q: What differences can you detect between the structures of dehiscent and predehiscent anthers?

A: Predehiscent Anthers are closed and elongated stems . Dehiscent Anthers are split open to release…

Q: What do pollen chamber in gymnosperms represent?

A: Gymnosperms are flowerless plants that produce naked or uncovered seeds or cones. The seeds of these…

Q: Some pollen grains will not germinate in vitro. They will germinate only on compatible stigma.  Why?

A: In the womb of a flower comes the pollen of flowers of different species of plants. But not all…

Q: in a soaked seed of corn, can you locate a hilum or raphe?

A: A hilum is a scar or mark left on a seed coat by the former attachment to the ovary wall or to the…

Q: How do pollen grains differ from spores or sperms?

A: A germ cell is any living cell that gives origin to the gametes of an organism that multiplies…

Q: Cork cambium forms tissues that form the cork. Do you agree with this statement? Explain.

A: Introduction  In this question we will discuss on the statement "Cork cambium forms tissues that…

Q: Observe a portion of the longitudinal section of Equisetum strobilus. Draw and Label the following…

A: The hosetails are living member of the group sphenopsida, are found in damp and shady regions of…

Q: Which of the following is not a term used in reference to flowers? corolla sepals calyx O perianth…

A: All of petals of flower collectively called as corolla.  Modified leaves that encase developing…

Q: Look at the pollen grain in the microscope, according to the morphology that presents this type of…

A: The pollen grains are male gametes of the plants. The pollen grains can fuse with the female gametes…

Q: In Optimal condition , spores will germinate this means Select one : a . Vegetative cells will form…

A: Spores are minute, typically one-celled reproductive structures formed either by sexual or asexual…

Q: Why do you think collechyma is not present in the root?

A: Collenchyma cells are long cylindrical shaped cells with thick cell walls which is not uniform…

Q: Is meosis produce pollen grain?

A: Meiosis is a type of cell division in which a parent cell divides into four daughter cells. The…

Q: What is the tissue origin of the glandular trichome and stinging trichome? Is it epidermal cells or…

A: Trichomes are evolved in response to protect some plants from grazing cattle. So trichomes ( hairs)…

Q: What are two ways in which pollen can be transported?

A: Pollination is the process in which pollen is transferred from the male part of a plant to the…

Q: : What is the term to describe the clusters of needles that grow together?

A: The arrangement of leaves on the stem is important for identification purposes. In pine trees, there…

Q: After pollen lands on a stigma, it is far away from the ovule with the megagametophyte, which holds…

A: The plants that have flowers belong to Angiosperms. A flower is a sexual unit of the plant. The…

Q: What process occurred within the sporangium to produce the haploid spores?

A: Asexual reproduction is carried out by Sporangia. Sporangia mature into a form known as a…

Q: 4 F E 10 D 11 13 A- B

A: Answer:  A: Ovary  B: Egg/Egg Cell/Egg nucleus C: Synergids D: Polar nuclei E: Antipodal cells F:…

Q: What is the structure produced by moss spore on germination called?

A: Bryophytes: These are non-vascular, small plants. It is important for regulating ecosystems.…

Q: What is germ sporangium?

A: Fungi are a group of organisms such as yeast, molds and mushrooms. Although they share some common…

Q: After pollination and then fertilization, what usually happens to each of the following: stigma,…

A: Flower is the reproductive organ of flowering plants. It is composed of stigma, style, carpel,…

Q: What is vascular cambium?

A: The vascular cambium is the meristem in the stem, that produces undifferentiated wood cells inwards…

Q: . Label the following structures of a Cross-section of a Monocot Stem in Primary Growth  2. Briefly…

A: Structures found in a cross-section of a Monocot stem are: 1. Pericycle or parenchymal cells.2.…

Q: These structures are part of the moss life cycle and develop directly from the spores. What are…

A: Mosses are non-  vascular plants which dies not true roots, stem and leaves .  It consists of…

Q: Describe the functions of each structure within the anther (vascular bundles, parenchyma, pollen…

A: Vascular plants are angiosperms. They have branches, roots, and leaves.  Angiosperm seeds are found…

Q: The image above shows a cross-section through a portion of the root of Phalaenopsis sp. stained with…

A: Phalaenopsis are commonly known as Orchids. They are monocots.

Q: this is a portion of mature frond, what is the shape of the sori and pattern of distribution?

A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…

Violence

Violence is defined as a physical act that causes or is intended to cause harm. Violence can cause physical, emotional, or both types of harm. Violence is defined by the World Health Organization as the intended use of physical force and power that causes threat or harm against oneself, another person, or against a community or group, and has the potential to cause damage, death, mental distress, maldevelopment, or poverty.