[Ovules are not enclosed b...] Which of the following statements is correct?

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10th CBSE Maths

Which of the following statements is correct?

Horsetails are gymnosperms

Selaginella is heterosporous, while Salvinia is homosporous

Ovules are not enclosed by ovary wall in gymnosperms

Stems are usually unbranched in both Cycas and Cedrus

Explanation:

• Gymnosperms have naked ovule.
• Called phanerogams without womb/ovary

Additional Questions

Match the items given in Column I with those in Column II and select the correct option given below:

Column I	Column II
a. Herbarium	(i) It is a place having a collection of preserved plants and animals
b. Key	(ii) A list that enumerates methodically all the species found in an area with brief description aiding identification
c. Museum	(iii) Is a place where dried and pressed plant specimens mounted on sheets are kept
d. Catalogue	(iv) A booklet containing a list of characters and their alternates which are helpful in identification of various taxa.

a b c d

Oxygen is not produced during photosynthesis by

Which of the following elements is responsible for maintaining turgor in cells?

Which of the following is a secondary pollutant?

What type of ecological pyramid would be obtained with the following data?
Secondary consumer : 120 g
Primary consumer : 60 g
Primary producer : 10 g

Stomata in grass leaf are

Sweet potato is a modified

Select the wrong statement :

After karyogamy followed by meiosis, spores are produced exogenously in

Winged pollen grains are present in

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